diff --git a/domain-server/src/DomainGatekeeper.cpp b/domain-server/src/DomainGatekeeper.cpp
index 6951a90261..620d593ebc 100644
--- a/domain-server/src/DomainGatekeeper.cpp
+++ b/domain-server/src/DomainGatekeeper.cpp
@@ -54,6 +54,7 @@ void DomainGatekeeper::processConnectRequestPacket(QSharedPointer<ReceivedMessag
     if (message->getSize() == 0) {
         return;
     }
+    
     QDataStream packetStream(message->getMessage());
 
     // read a NodeConnectionData object from the packet so we can pass around this data while we're inspecting it
diff --git a/domain-server/src/DomainServer.cpp b/domain-server/src/DomainServer.cpp
index 163bd48f1b..5bd6020c92 100644
--- a/domain-server/src/DomainServer.cpp
+++ b/domain-server/src/DomainServer.cpp
@@ -458,7 +458,7 @@ const QString DISABLED_AUTOMATIC_NETWORKING_VALUE = "disabled";
 
 
 
-bool DomainServer::packetVersionMatch(const udt::Packet& packet) {
+bool DomainServer::isPacketVerified(const udt::Packet& packet) {
     PacketType headerType = NLPacket::typeInHeader(packet);
     PacketVersion headerVersion = NLPacket::versionInHeader(packet);
 
@@ -471,7 +471,48 @@ bool DomainServer::packetVersionMatch(const udt::Packet& packet) {
         DomainGatekeeper::sendProtocolMismatchConnectionDenial(packet.getSenderSockAddr());
     }
 
-    // let the normal nodeList implementation handle all other packets.
+    if (!PacketTypeEnum::getNonSourcedPackets().contains(headerType)) {
+        // this is a sourced packet - first check if we have a node that matches
+        QUuid sourceID = NLPacket::sourceIDInHeader(packet);
+        SharedNodePointer sourceNode = nodeList->nodeWithUUID(sourceID);
+
+        if (sourceNode) {
+            // unverified DS packets (due to a lack of connection secret between DS + node)
+            // must come either from the same public IP address or a local IP address (set by RFC 1918)
+
+            DomainServerNodeData* nodeData = static_cast<DomainServerNodeData*>(sourceNode->getLinkedData());
+
+            bool exactAddressMatch = nodeData->getSendingSockAddr() == packet.getSenderSockAddr();
+            bool bothPrivateAddresses = nodeData->getSendingSockAddr().hasPrivateAddress()
+                && packet.getSenderSockAddr().hasPrivateAddress();
+
+            if (nodeData && (exactAddressMatch || bothPrivateAddresses)) {
+                // to the best of our ability we've verified that this packet comes from the right place
+                // let the NodeList do its checks now (but pass it the sourceNode so it doesn't need to look it up again)
+                return nodeList->isPacketVerifiedWithSource(packet, sourceNode.data());
+            } else {
+                static const QString UNKNOWN_REGEX = "Packet of type \\d+ \\([\\sa-zA-Z:]+\\) received from unmatched IP for UUID";
+                static QString repeatedMessage
+                    = LogHandler::getInstance().addRepeatedMessageRegex(UNKNOWN_REGEX);
+
+                qDebug() << "Packet of type" << headerType
+                    << "received from unmatched IP for UUID" << uuidStringWithoutCurlyBraces(sourceID);
+
+                return false;
+            }
+        } else {
+            static const QString UNKNOWN_REGEX = "Packet of type \\d+ \\([\\sa-zA-Z:]+\\) received from unknown node with UUID";
+            static QString repeatedMessage
+                = LogHandler::getInstance().addRepeatedMessageRegex(UNKNOWN_REGEX);
+
+            qDebug() << "Packet of type" << headerType
+                << "received from unknown node with UUID" << uuidStringWithoutCurlyBraces(sourceID);
+
+            return false;
+        }
+    }
+
+    // fallback to allow the normal NodeList implementation to verify packets
     return nodeList->isPacketVerified(packet);
 }
 
@@ -570,7 +611,7 @@ void DomainServer::setupNodeListAndAssignments() {
     addStaticAssignmentsToQueue();
 
     // set a custom packetVersionMatch as the verify packet operator for the udt::Socket
-    nodeList->setPacketFilterOperator(&DomainServer::packetVersionMatch);
+    nodeList->setPacketFilterOperator(&DomainServer::isPacketVerified);
 }
 
 const QString ACCESS_TOKEN_KEY_PATH = "metaverse.access_token";
@@ -853,7 +894,6 @@ void DomainServer::populateDefaultStaticAssignmentsExcludingTypes(const QSet<Ass
 }
 
 void DomainServer::processListRequestPacket(QSharedPointer<ReceivedMessage> message, SharedNodePointer sendingNode) {
-
     QDataStream packetStream(message->getMessage());
     NodeConnectionData nodeRequestData = NodeConnectionData::fromDataStream(packetStream, message->getSenderSockAddr(), false);
 
diff --git a/domain-server/src/DomainServer.h b/domain-server/src/DomainServer.h
index 4808297c89..03ad76d313 100644
--- a/domain-server/src/DomainServer.h
+++ b/domain-server/src/DomainServer.h
@@ -71,6 +71,7 @@ public slots:
 
     void restart();
 
+private slots:
     void processRequestAssignmentPacket(QSharedPointer<ReceivedMessage> packet);
     void processListRequestPacket(QSharedPointer<ReceivedMessage> packet, SharedNodePointer sendingNode);
     void processNodeJSONStatsPacket(QSharedPointer<ReceivedMessage> packetList, SharedNodePointer sendingNode);
@@ -79,7 +80,6 @@ public slots:
     void processICEServerHeartbeatDenialPacket(QSharedPointer<ReceivedMessage> message);
     void processICEServerHeartbeatACK(QSharedPointer<ReceivedMessage> message);
 
-private slots:
     void setupPendingAssignmentCredits();
     void sendPendingTransactionsToServer();
 
@@ -129,7 +129,7 @@ private:
 
     void getTemporaryName(bool force = false);
 
-    static bool packetVersionMatch(const udt::Packet& packet);
+    static bool isPacketVerified(const udt::Packet& packet);
 
     bool resetAccountManagerAccessToken();
 
diff --git a/interface/resources/qml/hifi/Feed.qml b/interface/resources/qml/hifi/Feed.qml
index 960b62c169..8576e26fcd 100644
--- a/interface/resources/qml/hifi/Feed.qml
+++ b/interface/resources/qml/hifi/Feed.qml
@@ -35,7 +35,6 @@ Column {
     property string metaverseServerUrl: '';
     property string actions: 'snapshot';
     // sendToScript doesn't get wired until after everything gets created. So we have to queue fillDestinations on nextTick.
-    Component.onCompleted: delay.start();
     property string labelText: actions;
     property string filter: '';
     onFilterChanged: filterChoicesByText();
@@ -125,11 +124,9 @@ Column {
             cb();
         });
     }
-    property var delay: Timer { // No setTimeout or nextTick in QML.
-        interval: 0;
-        onTriggered: fillDestinations();
-    }
     function fillDestinations() { // Public
+        console.debug('Feed::fillDestinations()')
+
         function report(label, error) {
             console.log(label, actions, error || 'ok', allStories.length, 'filtered to', suggestions.count);
         }
diff --git a/interface/resources/qml/hifi/tablet/TabletAddressDialog.qml b/interface/resources/qml/hifi/tablet/TabletAddressDialog.qml
index 8bf13bad76..e8752b01e7 100644
--- a/interface/resources/qml/hifi/tablet/TabletAddressDialog.qml
+++ b/interface/resources/qml/hifi/tablet/TabletAddressDialog.qml
@@ -39,11 +39,24 @@ StackView {
     property var rpcCounter: 0;
     signal sendToScript(var message);
     function rpc(method, parameters, callback) {
+        console.debug('TabletAddressDialog: rpc: method = ', method, 'parameters = ', parameters, 'callback = ', callback)
+
         rpcCalls[rpcCounter] = callback;
         var message = {method: method, params: parameters, id: rpcCounter++, jsonrpc: "2.0"};
         sendToScript(message);
     }
     function fromScript(message) {
+        if (message.method === 'refreshFeeds') {
+            var feeds = [happeningNow, places, snapshots];
+            console.debug('TabletAddressDialog::fromScript: refreshFeeds', 'feeds = ', feeds);
+
+            feeds.forEach(function(feed) {
+                Qt.callLater(feed.fillDestinations);
+            });
+
+            return;
+        }
+
         var callback = rpcCalls[message.id];
         if (!callback) {
             console.log('No callback for message fromScript', JSON.stringify(message));
diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 398b2dbdb4..d3b547a54c 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -1735,6 +1735,27 @@ Application::Application(int& argc, char** argv, QElapsedTimer& startupTimer, bo
 
     connect(&_myCamera, &Camera::modeUpdated, this, &Application::cameraModeChanged);
 
+    // Setup the mouse ray pick and related operators
+    DependencyManager::get<EntityTreeRenderer>()->setMouseRayPickID(_rayPickManager.createRayPick(
+        RayPickFilter(DependencyManager::get<RayPickScriptingInterface>()->PICK_ENTITIES() | DependencyManager::get<RayPickScriptingInterface>()->PICK_INCLUDE_NONCOLLIDABLE()),
+        0.0f, true));
+    DependencyManager::get<EntityTreeRenderer>()->setMouseRayPickResultOperator([&](QUuid rayPickID) {
+        RayToEntityIntersectionResult entityResult;
+        RayPickResult result = _rayPickManager.getPrevRayPickResult(rayPickID);
+        entityResult.intersects = result.type != DependencyManager::get<RayPickScriptingInterface>()->INTERSECTED_NONE();
+        if (entityResult.intersects) {
+            entityResult.intersection = result.intersection;
+            entityResult.distance = result.distance;
+            entityResult.surfaceNormal = result.surfaceNormal;
+            entityResult.entityID = result.objectID;
+            entityResult.entity = DependencyManager::get<EntityTreeRenderer>()->getTree()->findEntityByID(entityResult.entityID);
+        }
+        return entityResult;
+    });
+    DependencyManager::get<EntityTreeRenderer>()->setSetPrecisionPickingOperator([&](QUuid rayPickID, bool value) {
+        _rayPickManager.setPrecisionPicking(rayPickID, value);
+    });
+
     qCDebug(interfaceapp) << "Metaverse session ID is" << uuidStringWithoutCurlyBraces(accountManager->getSessionID());
 }
 
diff --git a/interface/src/raypick/LaserPointer.h b/interface/src/raypick/LaserPointer.h
index d901d12cf4..23f023cf7a 100644
--- a/interface/src/raypick/LaserPointer.h
+++ b/interface/src/raypick/LaserPointer.h
@@ -64,6 +64,7 @@ public:
     // You cannot use editRenderState to change the overlay type of any part of the laser pointer.  You can only edit the properties of the existing overlays.
     void editRenderState(const std::string& state, const QVariant& startProps, const QVariant& pathProps, const QVariant& endProps);
 
+    void setPrecisionPicking(const bool precisionPicking) { DependencyManager::get<RayPickScriptingInterface>()->setPrecisionPicking(_rayPickUID, precisionPicking); }
     void setIgnoreEntities(const QScriptValue& ignoreEntities) { DependencyManager::get<RayPickScriptingInterface>()->setIgnoreEntities(_rayPickUID, ignoreEntities); }
     void setIncludeEntities(const QScriptValue& includeEntities) { DependencyManager::get<RayPickScriptingInterface>()->setIncludeEntities(_rayPickUID, includeEntities); }
     void setIgnoreOverlays(const QScriptValue& ignoreOverlays) { DependencyManager::get<RayPickScriptingInterface>()->setIgnoreOverlays(_rayPickUID, ignoreOverlays); }
diff --git a/interface/src/raypick/LaserPointerManager.cpp b/interface/src/raypick/LaserPointerManager.cpp
index 908bcc39f1..1fd0fe9e88 100644
--- a/interface/src/raypick/LaserPointerManager.cpp
+++ b/interface/src/raypick/LaserPointerManager.cpp
@@ -97,6 +97,14 @@ void LaserPointerManager::update() {
     }
 }
 
+void LaserPointerManager::setPrecisionPicking(QUuid uid, const bool precisionPicking) {
+    QReadLocker lock(&_containsLock);
+    if (_laserPointers.contains(uid)) {
+        QWriteLocker laserLock(_laserPointerLocks[uid].get());
+        _laserPointers[uid]->setPrecisionPicking(precisionPicking);
+    }
+}
+
 void LaserPointerManager::setIgnoreEntities(QUuid uid, const QScriptValue& ignoreEntities) {
     QReadLocker lock(&_containsLock);
     if (_laserPointers.contains(uid)) {
diff --git a/interface/src/raypick/LaserPointerManager.h b/interface/src/raypick/LaserPointerManager.h
index 020b778983..b573410fe7 100644
--- a/interface/src/raypick/LaserPointerManager.h
+++ b/interface/src/raypick/LaserPointerManager.h
@@ -31,6 +31,7 @@ public:
     void editRenderState(QUuid uid, const std::string& state, const QVariant& startProps, const QVariant& pathProps, const QVariant& endProps);
     const RayPickResult getPrevRayPickResult(const QUuid uid);
 
+    void setPrecisionPicking(QUuid uid, const bool precisionPicking);
     void setIgnoreEntities(QUuid uid, const QScriptValue& ignoreEntities);
     void setIncludeEntities(QUuid uid, const QScriptValue& includeEntities);
     void setIgnoreOverlays(QUuid uid, const QScriptValue& ignoreOverlays);
diff --git a/interface/src/raypick/LaserPointerScriptingInterface.h b/interface/src/raypick/LaserPointerScriptingInterface.h
index 8ae263b0ec..d65eb335b3 100644
--- a/interface/src/raypick/LaserPointerScriptingInterface.h
+++ b/interface/src/raypick/LaserPointerScriptingInterface.h
@@ -30,6 +30,7 @@ public slots:
     Q_INVOKABLE void setRenderState(QUuid uid, const QString& renderState) { qApp->getLaserPointerManager().setRenderState(uid, renderState.toStdString()); }
     Q_INVOKABLE RayPickResult getPrevRayPickResult(QUuid uid) { return qApp->getLaserPointerManager().getPrevRayPickResult(uid); }
 
+    Q_INVOKABLE void setPrecisionPicking(QUuid uid, const bool precisionPicking) { qApp->getLaserPointerManager().setPrecisionPicking(uid, precisionPicking); }
     Q_INVOKABLE void setIgnoreEntities(QUuid uid, const QScriptValue& ignoreEntities) { qApp->getLaserPointerManager().setIgnoreEntities(uid, ignoreEntities); }
     Q_INVOKABLE void setIncludeEntities(QUuid uid, const QScriptValue& includeEntities) { qApp->getLaserPointerManager().setIncludeEntities(uid, includeEntities); }
     Q_INVOKABLE void setIgnoreOverlays(QUuid uid, const QScriptValue& ignoreOverlays) { qApp->getLaserPointerManager().setIgnoreOverlays(uid, ignoreOverlays); }
diff --git a/interface/src/raypick/RayPick.h b/interface/src/raypick/RayPick.h
index e108145d55..04045b2116 100644
--- a/interface/src/raypick/RayPick.h
+++ b/interface/src/raypick/RayPick.h
@@ -41,12 +41,14 @@ public:
     // The key is the Flags
     Flags _flags;
 
-    RayPickFilter() : _flags(PICK_NOTHING) {}
+    RayPickFilter() : _flags(getBitMask(PICK_NOTHING)) {}
     RayPickFilter(const Flags& flags) : _flags(flags) {}
 
     bool operator== (const RayPickFilter& rhs) const { return _flags == rhs._flags; }
     bool operator!= (const RayPickFilter& rhs) const { return _flags != rhs._flags; }
 
+    void setFlag(FlagBit flag, bool value) { _flags[flag] = value; }
+
     bool doesPickNothing() const { return _flags[PICK_NOTHING]; }
     bool doesPickEntities() const { return _flags[PICK_ENTITIES]; }
     bool doesPickOverlays() const { return _flags[PICK_OVERLAYS]; }
@@ -61,27 +63,27 @@ public:
 
     // Helpers for RayPickManager
     Flags getEntityFlags() const {
-        Flags toReturn(PICK_ENTITIES);
+        unsigned int toReturn = getBitMask(PICK_ENTITIES);
         if (doesPickInvisible()) {
-            toReturn |= Flags(PICK_INCLUDE_INVISIBLE);
+            toReturn |= getBitMask(PICK_INCLUDE_INVISIBLE);
         }
         if (doesPickNonCollidable()) {
-            toReturn |= Flags(PICK_INCLUDE_NONCOLLIDABLE);
+            toReturn |= getBitMask(PICK_INCLUDE_NONCOLLIDABLE);
         }
-        return toReturn;
+        return Flags(toReturn);
     }
     Flags getOverlayFlags() const {
-        Flags toReturn(PICK_OVERLAYS);
+        unsigned int toReturn = getBitMask(PICK_OVERLAYS);
         if (doesPickInvisible()) {
-            toReturn |= Flags(PICK_INCLUDE_INVISIBLE);
+            toReturn |= getBitMask(PICK_INCLUDE_INVISIBLE);
         }
         if (doesPickNonCollidable()) {
-            toReturn |= Flags(PICK_INCLUDE_NONCOLLIDABLE);
+            toReturn |= getBitMask(PICK_INCLUDE_NONCOLLIDABLE);
         }
-        return toReturn;
+        return Flags(toReturn);
     }
-    Flags getAvatarFlags() const { return Flags(PICK_AVATARS); }
-    Flags getHUDFlags() const { return Flags(PICK_HUD); }
+    Flags getAvatarFlags() const { return Flags(getBitMask(PICK_AVATARS)); }
+    Flags getHUDFlags() const { return Flags(getBitMask(PICK_HUD)); }
 
     static unsigned int getBitMask(FlagBit bit) { return 1 << bit; }
 
@@ -98,10 +100,12 @@ public:
     void disable() { _enabled = false; }
 
     const RayPickFilter& getFilter() { return _filter; }
-    const float& getMaxDistance() { return _maxDistance; }
-    const bool& isEnabled() { return _enabled; }
+    float getMaxDistance() { return _maxDistance; }
+    bool isEnabled() { return _enabled; }
     const RayPickResult& getPrevRayPickResult() { return _prevResult; }
 
+    void setPrecisionPicking(bool precisionPicking) { _filter.setFlag(RayPickFilter::PICK_COURSE, !precisionPicking); }
+
     void setRayPickResult(const RayPickResult& rayPickResult) { _prevResult = rayPickResult; }
 
     const QVector<EntityItemID>& getIgnoreEntites() { return _ignoreEntities; }
diff --git a/interface/src/raypick/RayPickManager.cpp b/interface/src/raypick/RayPickManager.cpp
index 8b639d4a81..1ec8efc331 100644
--- a/interface/src/raypick/RayPickManager.cpp
+++ b/interface/src/raypick/RayPickManager.cpp
@@ -64,10 +64,11 @@ void RayPickManager::update() {
             RayToEntityIntersectionResult entityRes;
             bool fromCache = true;
             bool invisible = rayPick->getFilter().doesPickInvisible();
-            bool noncollidable = rayPick->getFilter().doesPickNonCollidable();
+            bool nonCollidable = rayPick->getFilter().doesPickNonCollidable();
             RayPickFilter::Flags entityMask = rayPick->getFilter().getEntityFlags();
             if (!checkAndCompareCachedResults(rayKey, results, res, entityMask)) {
-                entityRes = DependencyManager::get<EntityScriptingInterface>()->findRayIntersectionVector(ray, true, rayPick->getIncludeEntites(), rayPick->getIgnoreEntites(), !invisible, !noncollidable);
+                entityRes = DependencyManager::get<EntityScriptingInterface>()->findRayIntersectionVector(ray, !rayPick->getFilter().doesPickCourse(),
+                    rayPick->getIncludeEntites(), rayPick->getIgnoreEntites(), !invisible, !nonCollidable);
                 fromCache = false;
             }
 
@@ -81,10 +82,11 @@ void RayPickManager::update() {
             RayToOverlayIntersectionResult overlayRes;
             bool fromCache = true;
             bool invisible = rayPick->getFilter().doesPickInvisible();
-            bool noncollidable = rayPick->getFilter().doesPickNonCollidable();
+            bool nonCollidable = rayPick->getFilter().doesPickNonCollidable();
             RayPickFilter::Flags overlayMask = rayPick->getFilter().getOverlayFlags();
             if (!checkAndCompareCachedResults(rayKey, results, res, overlayMask)) {
-                overlayRes = qApp->getOverlays().findRayIntersectionVector(ray, true, rayPick->getIncludeOverlays(), rayPick->getIgnoreOverlays(), !invisible, !noncollidable);
+                overlayRes = qApp->getOverlays().findRayIntersectionVector(ray, !rayPick->getFilter().doesPickCourse(),
+                    rayPick->getIncludeOverlays(), rayPick->getIgnoreOverlays(), !invisible, !nonCollidable);
                 fromCache = false;
             }
 
@@ -204,6 +206,14 @@ const RayPickResult RayPickManager::getPrevRayPickResult(const QUuid uid) {
     return RayPickResult();
 }
 
+void RayPickManager::setPrecisionPicking(QUuid uid, const bool precisionPicking) {
+    QReadLocker containsLock(&_containsLock);
+    if (_rayPicks.contains(uid)) {
+        QWriteLocker lock(_rayPickLocks[uid].get());
+        _rayPicks[uid]->setPrecisionPicking(precisionPicking);
+    }
+}
+
 void RayPickManager::setIgnoreEntities(QUuid uid, const QScriptValue& ignoreEntities) {
     QReadLocker containsLock(&_containsLock);
     if (_rayPicks.contains(uid)) {
diff --git a/interface/src/raypick/RayPickManager.h b/interface/src/raypick/RayPickManager.h
index 8ef2ceebe0..f2b1ff4ae4 100644
--- a/interface/src/raypick/RayPickManager.h
+++ b/interface/src/raypick/RayPickManager.h
@@ -38,6 +38,7 @@ public:
     void disableRayPick(const QUuid uid);
     const RayPickResult getPrevRayPickResult(const QUuid uid);
 
+    void setPrecisionPicking(QUuid uid, const bool precisionPicking);
     void setIgnoreEntities(QUuid uid, const QScriptValue& ignoreEntities);
     void setIncludeEntities(QUuid uid, const QScriptValue& includeEntities);
     void setIgnoreOverlays(QUuid uid, const QScriptValue& ignoreOverlays);
diff --git a/interface/src/raypick/RayPickScriptingInterface.cpp b/interface/src/raypick/RayPickScriptingInterface.cpp
index aa1613d696..015f8fd7d1 100644
--- a/interface/src/raypick/RayPickScriptingInterface.cpp
+++ b/interface/src/raypick/RayPickScriptingInterface.cpp
@@ -82,6 +82,10 @@ RayPickResult RayPickScriptingInterface::getPrevRayPickResult(QUuid uid) {
     return qApp->getRayPickManager().getPrevRayPickResult(uid);
 }
 
+void RayPickScriptingInterface::setPrecisionPicking(QUuid uid, const bool precisionPicking) {
+    qApp->getRayPickManager().setPrecisionPicking(uid, precisionPicking);
+}
+
 void RayPickScriptingInterface::setIgnoreEntities(QUuid uid, const QScriptValue& ignoreEntities) {
     qApp->getRayPickManager().setIgnoreEntities(uid, ignoreEntities);
 }
diff --git a/interface/src/raypick/RayPickScriptingInterface.h b/interface/src/raypick/RayPickScriptingInterface.h
index e576b5d076..f7ed2e6fa6 100644
--- a/interface/src/raypick/RayPickScriptingInterface.h
+++ b/interface/src/raypick/RayPickScriptingInterface.h
@@ -43,6 +43,7 @@ public slots:
     Q_INVOKABLE void removeRayPick(QUuid uid);
     Q_INVOKABLE RayPickResult getPrevRayPickResult(QUuid uid);
 
+    Q_INVOKABLE void setPrecisionPicking(QUuid uid, const bool precisionPicking);
     Q_INVOKABLE void setIgnoreEntities(QUuid uid, const QScriptValue& ignoreEntities);
     Q_INVOKABLE void setIncludeEntities(QUuid uid, const QScriptValue& includeEntities);
     Q_INVOKABLE void setIgnoreOverlays(QUuid uid, const QScriptValue& ignoreOverlays);
@@ -50,7 +51,6 @@ public slots:
     Q_INVOKABLE void setIgnoreAvatars(QUuid uid, const QScriptValue& ignoreAvatars);
     Q_INVOKABLE void setIncludeAvatars(QUuid uid, const QScriptValue& includeAvatars);
 
-private:
     unsigned int PICK_NOTHING() { return RayPickFilter::getBitMask(RayPickFilter::FlagBit::PICK_NOTHING); }
     unsigned int PICK_ENTITIES() { return RayPickFilter::getBitMask(RayPickFilter::FlagBit::PICK_ENTITIES); }
     unsigned int PICK_OVERLAYS() { return RayPickFilter::getBitMask(RayPickFilter::FlagBit::PICK_OVERLAYS); }
diff --git a/interface/src/ui/overlays/Circle3DOverlay.cpp b/interface/src/ui/overlays/Circle3DOverlay.cpp
index 52a3d7a929..242021d698 100644
--- a/interface/src/ui/overlays/Circle3DOverlay.cpp
+++ b/interface/src/ui/overlays/Circle3DOverlay.cpp
@@ -264,7 +264,7 @@ void Circle3DOverlay::render(RenderArgs* args) {
 
 const render::ShapeKey Circle3DOverlay::getShapeKey() {
     auto builder = render::ShapeKey::Builder().withoutCullFace().withUnlit();
-    if (getAlpha() != 1.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     if (!getIsSolid() || shouldDrawHUDLayer()) {
diff --git a/interface/src/ui/overlays/Cube3DOverlay.cpp b/interface/src/ui/overlays/Cube3DOverlay.cpp
index 31cbe5e822..5ab32d21fe 100644
--- a/interface/src/ui/overlays/Cube3DOverlay.cpp
+++ b/interface/src/ui/overlays/Cube3DOverlay.cpp
@@ -117,7 +117,7 @@ void Cube3DOverlay::render(RenderArgs* args) {
 
 const render::ShapeKey Cube3DOverlay::getShapeKey() {
     auto builder = render::ShapeKey::Builder();
-    if (getAlpha() != 1.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     if (!getIsSolid() || shouldDrawHUDLayer()) {
diff --git a/interface/src/ui/overlays/Image3DOverlay.cpp b/interface/src/ui/overlays/Image3DOverlay.cpp
index 82417db83a..76a82d0268 100644
--- a/interface/src/ui/overlays/Image3DOverlay.cpp
+++ b/interface/src/ui/overlays/Image3DOverlay.cpp
@@ -19,6 +19,7 @@
 
 #include "GeometryUtil.h"
 
+#include "AbstractViewStateInterface.h"
 
 QString const Image3DOverlay::TYPE = "image3d";
 
@@ -58,12 +59,29 @@ void Image3DOverlay::render(RenderArgs* args) {
     if (!_isLoaded) {
         _isLoaded = true;
         _texture = DependencyManager::get<TextureCache>()->getTexture(_url);
+        _textureIsLoaded = false;
     }
 
     if (!_visible || !getParentVisible() || !_texture || !_texture->isLoaded()) {
         return;
     }
 
+    // Once the texture has loaded, check if we need to update the render item because of transparency
+    if (!_textureIsLoaded && _texture && _texture->getGPUTexture()) {
+        _textureIsLoaded = true;
+        bool prevAlphaTexture = _alphaTexture;
+        _alphaTexture = _texture->getGPUTexture()->getUsage().isAlpha();
+        if (_alphaTexture != prevAlphaTexture) {
+            auto itemID = getRenderItemID();
+            if (render::Item::isValidID(itemID)) {
+                render::ScenePointer scene = AbstractViewStateInterface::instance()->getMain3DScene();
+                render::Transaction transaction;
+                transaction.updateItem(itemID);
+                scene->enqueueTransaction(transaction);
+            }
+        }
+    }
+
     Q_ASSERT(args->_batch);
     gpu::Batch* batch = args->_batch;
 
@@ -92,9 +110,9 @@ void Image3DOverlay::render(RenderArgs* args) {
 
     glm::vec2 topLeft(-x, -y);
     glm::vec2 bottomRight(x, y);
-    glm::vec2 texCoordTopLeft(fromImage.x() / imageWidth, fromImage.y() / imageHeight);
-    glm::vec2 texCoordBottomRight((fromImage.x() + fromImage.width()) / imageWidth,
-                                  (fromImage.y() + fromImage.height()) / imageHeight);
+    glm::vec2 texCoordTopLeft((fromImage.x() + 0.5f) / imageWidth, (fromImage.y() + 0.5f) / imageHeight);
+    glm::vec2 texCoordBottomRight((fromImage.x() + fromImage.width() - 0.5f) / imageWidth,
+                                  (fromImage.y() + fromImage.height() - 0.5f) / imageHeight);
 
     const float MAX_COLOR = 255.0f;
     xColor color = getColor();
@@ -126,7 +144,7 @@ const render::ShapeKey Image3DOverlay::getShapeKey() {
     if (_emissive || shouldDrawHUDLayer()) {
         builder.withUnlit();
     }
-    if (getAlpha() != 1.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     return builder.build();
diff --git a/interface/src/ui/overlays/Image3DOverlay.h b/interface/src/ui/overlays/Image3DOverlay.h
index 2e5f74749c..4f813e7368 100644
--- a/interface/src/ui/overlays/Image3DOverlay.h
+++ b/interface/src/ui/overlays/Image3DOverlay.h
@@ -39,6 +39,7 @@ public:
 
     void setProperties(const QVariantMap& properties) override;
     QVariant getProperty(const QString& property) override;
+    bool isTransparent() override { return Base3DOverlay::isTransparent() || _alphaTexture; }
 
     virtual bool findRayIntersection(const glm::vec3& origin, const glm::vec3& direction, float& distance, 
                                         BoxFace& face, glm::vec3& surfaceNormal) override;
@@ -48,6 +49,8 @@ public:
 private:
     QString _url;
     NetworkTexturePointer _texture;
+    bool _textureIsLoaded { false };
+    bool _alphaTexture { false };
     bool _emissive { false };
 
     QRect _fromImage; // where from in the image to sample
diff --git a/interface/src/ui/overlays/Line3DOverlay.cpp b/interface/src/ui/overlays/Line3DOverlay.cpp
index d8fe0e6bb8..cc8ed8e1a8 100644
--- a/interface/src/ui/overlays/Line3DOverlay.cpp
+++ b/interface/src/ui/overlays/Line3DOverlay.cpp
@@ -13,6 +13,7 @@
 #include <GeometryCache.h>
 #include <RegisteredMetaTypes.h>
 
+#include "AbstractViewStateInterface.h"
 
 QString const Line3DOverlay::TYPE = "line3d";
 
@@ -149,7 +150,7 @@ void Line3DOverlay::render(RenderArgs* args) {
 
 const render::ShapeKey Line3DOverlay::getShapeKey() {
     auto builder = render::ShapeKey::Builder().withOwnPipeline();
-    if (getAlpha() != 1.0f || _glow > 0.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     return builder.build();
@@ -222,9 +223,17 @@ void Line3DOverlay::setProperties(const QVariantMap& originalProperties) {
 
     auto glow = properties["glow"];
     if (glow.isValid()) {
+        float prevGlow = _glow;
         setGlow(glow.toFloat());
-        if (_glow > 0.0f) {
-            _alpha = 0.5f;
+        // Update our payload key if necessary to handle transparency
+        if ((prevGlow <= 0.0f && _glow > 0.0f) || (prevGlow > 0.0f && _glow <= 0.0f)) {
+            auto itemID = getRenderItemID();
+            if (render::Item::isValidID(itemID)) {
+                render::ScenePointer scene = AbstractViewStateInterface::instance()->getMain3DScene();
+                render::Transaction transaction;
+                transaction.updateItem(itemID);
+                scene->enqueueTransaction(transaction);
+            }
         }
     }
 
diff --git a/interface/src/ui/overlays/Line3DOverlay.h b/interface/src/ui/overlays/Line3DOverlay.h
index c9ceac55a9..9abc2f1a8d 100644
--- a/interface/src/ui/overlays/Line3DOverlay.h
+++ b/interface/src/ui/overlays/Line3DOverlay.h
@@ -45,6 +45,7 @@ public:
 
     void setProperties(const QVariantMap& properties) override;
     QVariant getProperty(const QString& property) override;
+    bool isTransparent() override { return Base3DOverlay::isTransparent() || _glow > 0.0f; }
 
     virtual Line3DOverlay* createClone() const override;
 
diff --git a/interface/src/ui/overlays/Overlay.h b/interface/src/ui/overlays/Overlay.h
index a9774eea06..db2979b4d5 100644
--- a/interface/src/ui/overlays/Overlay.h
+++ b/interface/src/ui/overlays/Overlay.h
@@ -59,6 +59,7 @@ public:
     bool isLoaded() { return _isLoaded; }
     bool getVisible() const { return _visible; }
     bool shouldDrawHUDLayer() const { return _drawHUDLayer; }
+    virtual bool isTransparent() { return getAlphaPulse() != 0.0f || getAlpha() != 1.0f; };
     xColor getColor();
     float getAlpha();
     Anchor getAnchor() const { return _anchor; }
diff --git a/interface/src/ui/overlays/OverlaysPayload.cpp b/interface/src/ui/overlays/OverlaysPayload.cpp
index 8b7100205a..f2684a4368 100644
--- a/interface/src/ui/overlays/OverlaysPayload.cpp
+++ b/interface/src/ui/overlays/OverlaysPayload.cpp
@@ -37,7 +37,7 @@ namespace render {
             if (std::static_pointer_cast<Base3DOverlay>(overlay)->getDrawInFront()) {
                 builder.withLayered();
             }
-            if (overlay->getAlphaPulse() != 0.0f || overlay->getAlpha() != 1.0f) {
+            if (overlay->isTransparent()) {
                 builder.withTransparent();
             }
         } else {
diff --git a/interface/src/ui/overlays/Rectangle3DOverlay.cpp b/interface/src/ui/overlays/Rectangle3DOverlay.cpp
index f981fe1462..22124a0a97 100644
--- a/interface/src/ui/overlays/Rectangle3DOverlay.cpp
+++ b/interface/src/ui/overlays/Rectangle3DOverlay.cpp
@@ -110,7 +110,7 @@ void Rectangle3DOverlay::render(RenderArgs* args) {
 
 const render::ShapeKey Rectangle3DOverlay::getShapeKey() {
     auto builder = render::ShapeKey::Builder().withOwnPipeline();
-    if (getAlpha() != 1.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     return builder.build();
diff --git a/interface/src/ui/overlays/Shape3DOverlay.cpp b/interface/src/ui/overlays/Shape3DOverlay.cpp
index 7126f7bde4..df0ecba307 100644
--- a/interface/src/ui/overlays/Shape3DOverlay.cpp
+++ b/interface/src/ui/overlays/Shape3DOverlay.cpp
@@ -62,7 +62,7 @@ void Shape3DOverlay::render(RenderArgs* args) {
 
 const render::ShapeKey Shape3DOverlay::getShapeKey() {
     auto builder = render::ShapeKey::Builder();
-    if (getAlpha() != 1.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     if (!getIsSolid() || shouldDrawHUDLayer()) {
diff --git a/interface/src/ui/overlays/Sphere3DOverlay.cpp b/interface/src/ui/overlays/Sphere3DOverlay.cpp
index ee3f9b9784..9309316d6e 100644
--- a/interface/src/ui/overlays/Sphere3DOverlay.cpp
+++ b/interface/src/ui/overlays/Sphere3DOverlay.cpp
@@ -59,7 +59,7 @@ void Sphere3DOverlay::render(RenderArgs* args) {
 
 const render::ShapeKey Sphere3DOverlay::getShapeKey() {
     auto builder = render::ShapeKey::Builder();
-    if (getAlpha() != 1.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     if (!getIsSolid() || shouldDrawHUDLayer()) {
diff --git a/interface/src/ui/overlays/Text3DOverlay.cpp b/interface/src/ui/overlays/Text3DOverlay.cpp
index 4b110b8099..bb8c24aa11 100644
--- a/interface/src/ui/overlays/Text3DOverlay.cpp
+++ b/interface/src/ui/overlays/Text3DOverlay.cpp
@@ -143,7 +143,7 @@ void Text3DOverlay::render(RenderArgs* args) {
 
 const render::ShapeKey Text3DOverlay::getShapeKey() {
     auto builder = render::ShapeKey::Builder();
-    if (getAlpha() != 1.0f) {
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     return builder.build();
diff --git a/interface/src/ui/overlays/Web3DOverlay.cpp b/interface/src/ui/overlays/Web3DOverlay.cpp
index 40af679a13..5acb4d2ceb 100644
--- a/interface/src/ui/overlays/Web3DOverlay.cpp
+++ b/interface/src/ui/overlays/Web3DOverlay.cpp
@@ -318,8 +318,8 @@ void Web3DOverlay::render(RenderArgs* args) {
 }
 
 const render::ShapeKey Web3DOverlay::getShapeKey() {
-    auto builder = render::ShapeKey::Builder().withoutCullFace().withDepthBias();
-    if (getAlpha() != 1.0f) {
+    auto builder = render::ShapeKey::Builder().withoutCullFace().withDepthBias().withOwnPipeline();
+    if (isTransparent()) {
         builder.withTranslucent();
     }
     return builder.build();
diff --git a/libraries/animation/src/Rig.cpp b/libraries/animation/src/Rig.cpp
index 1b91737364..aa368b291b 100644
--- a/libraries/animation/src/Rig.cpp
+++ b/libraries/animation/src/Rig.cpp
@@ -32,6 +32,10 @@
 #include "AnimUtil.h"
 #include "IKTarget.h"
 
+static int nextRigId = 1;
+static std::map<int, Rig*> rigRegistry;
+static std::mutex rigRegistryMutex;
+
 static bool isEqual(const glm::vec3& u, const glm::vec3& v) {
     const float EPSILON = 0.0001f;
     return glm::length(u - v) / glm::length(u) <= EPSILON;
@@ -49,6 +53,26 @@ const glm::vec3 DEFAULT_RIGHT_EYE_POS(-0.3f, 0.9f, 0.0f);
 const glm::vec3 DEFAULT_LEFT_EYE_POS(0.3f, 0.9f, 0.0f);
 const glm::vec3 DEFAULT_HEAD_POS(0.0f, 0.75f, 0.0f);
 
+Rig::Rig() {
+    // Ensure thread-safe access to the rigRegistry.
+    std::lock_guard<std::mutex> guard(rigRegistryMutex);
+
+    // Insert this newly allocated rig into the rig registry
+    _rigId = nextRigId;
+    rigRegistry[_rigId] = this;
+    nextRigId++;
+}
+
+Rig::~Rig() {
+    // Ensure thread-safe access to the rigRegstry, but also prevent the rig from being deleted
+    // while Rig::animationStateHandlerResult is being invoked on a script thread.
+    std::lock_guard<std::mutex> guard(rigRegistryMutex);
+    auto iter = rigRegistry.find(_rigId);
+    if (iter != rigRegistry.end()) {
+        rigRegistry.erase(iter);
+    }
+}
+
 void Rig::overrideAnimation(const QString& url, float fps, bool loop, float firstFrame, float lastFrame) {
 
     UserAnimState::ClipNodeEnum clipNodeEnum;
@@ -935,8 +959,19 @@ void Rig::updateAnimationStateHandlers() { // called on avatar update thread (wh
         int identifier = data.key();
         StateHandler& value = data.value();
         QScriptValue& function = value.function;
-        auto handleResult = [this, identifier](QScriptValue result) { // called in script thread to get the result back to us.
-            animationStateHandlerResult(identifier, result);
+        int rigId = _rigId;
+        auto handleResult = [rigId, identifier](QScriptValue result) { // called in script thread to get the result back to us.
+            // Hold the rigRegistryMutex to ensure thread-safe access to the rigRegistry, but
+            // also to prevent the rig from being deleted while this lambda is being executed.
+            std::lock_guard<std::mutex> guard(rigRegistryMutex);
+
+            // if the rig pointer is in the registry, it has not been deleted yet.
+            auto iter = rigRegistry.find(rigId);
+            if (iter != rigRegistry.end()) {
+                Rig* rig = iter->second;
+                assert(rig);
+                rig->animationStateHandlerResult(identifier, result);
+            }
         };
         // invokeMethod makes a copy of the args, and copies of AnimVariantMap do copy the underlying map, so this will correctly capture
         // the state of _animVars and allow continued changes to _animVars in this thread without conflict.
diff --git a/libraries/animation/src/Rig.h b/libraries/animation/src/Rig.h
index ca55635250..eabc62ab75 100644
--- a/libraries/animation/src/Rig.h
+++ b/libraries/animation/src/Rig.h
@@ -97,8 +97,8 @@ public:
         Hover
     };
 
-    Rig() {}
-    virtual ~Rig() {}
+    Rig();
+    virtual ~Rig();
 
     void destroyAnimGraph();
 
@@ -372,6 +372,8 @@ protected:
 
     glm::vec3 _prevLeftHandPoleVector { -Vectors::UNIT_Z };
     bool _prevLeftHandPoleVectorValid { false };
+
+    int _rigId;
 };
 
 #endif /* defined(__hifi__Rig__) */
diff --git a/libraries/entities-renderer/src/EntityTreeRenderer.cpp b/libraries/entities-renderer/src/EntityTreeRenderer.cpp
index a8eca41077..a2d2d34837 100644
--- a/libraries/entities-renderer/src/EntityTreeRenderer.cpp
+++ b/libraries/entities-renderer/src/EntityTreeRenderer.cpp
@@ -53,7 +53,6 @@ EntityTreeRenderer::EntityTreeRenderer(bool wantScripts, AbstractViewStateInterf
     _viewState(viewState),
     _scriptingServices(scriptingServices),
     _displayModelBounds(false),
-    _dontDoPrecisionPicking(false),
     _layeredZones(this)
 {
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Model, RenderableModelEntityItem::factory)
@@ -428,28 +427,6 @@ void EntityTreeRenderer::deleteReleasedModels() {
     }
 }
 
-RayToEntityIntersectionResult EntityTreeRenderer::findRayIntersectionWorker(const PickRay& ray, Octree::lockType lockType,
-                                                                                    bool precisionPicking, const QVector<EntityItemID>& entityIdsToInclude,
-                                                                                    const QVector<EntityItemID>& entityIdsToDiscard, bool visibleOnly, bool collidableOnly) {
-    RayToEntityIntersectionResult result;
-    if (_tree) {
-        EntityTreePointer entityTree = std::static_pointer_cast<EntityTree>(_tree);
-
-        OctreeElementPointer element;
-        EntityItemPointer intersectedEntity = NULL;
-        result.intersects = entityTree->findRayIntersection(ray.origin, ray.direction,
-            entityIdsToInclude, entityIdsToDiscard, visibleOnly, collidableOnly, precisionPicking,
-            element, result.distance, result.face, result.surfaceNormal,
-            (void**)&intersectedEntity, lockType, &result.accurate);
-        if (result.intersects && intersectedEntity) {
-            result.entityID = intersectedEntity->getEntityItemID();
-            result.intersection = ray.origin + (ray.direction * result.distance);
-            result.entity = intersectedEntity;
-        }
-    }
-    return result;
-}
-
 void EntityTreeRenderer::connectSignalsToSlots(EntityScriptingInterface* entityScriptingInterface) {
 
     connect(this, &EntityTreeRenderer::mousePressOnEntity, entityScriptingInterface, &EntityScriptingInterface::mousePressOnEntity);
@@ -530,11 +507,10 @@ void EntityTreeRenderer::mousePressEvent(QMouseEvent* event) {
     if (!_tree || _shuttingDown) {
         return;
     }
+
     PerformanceTimer perfTimer("EntityTreeRenderer::mousePressEvent");
     PickRay ray = _viewState->computePickRay(event->x(), event->y());
-
-    bool precisionPicking = !_dontDoPrecisionPicking;
-    RayToEntityIntersectionResult rayPickResult = findRayIntersectionWorker(ray, Octree::Lock, precisionPicking);
+    RayToEntityIntersectionResult rayPickResult = _getPrevRayPickResultOperator(_mouseRayPickID);
     if (rayPickResult.intersects) {
         //qCDebug(entitiesrenderer) << "mousePressEvent over entity:" << rayPickResult.entityID;
 
@@ -579,11 +555,10 @@ void EntityTreeRenderer::mouseDoublePressEvent(QMouseEvent* event) {
     if (!_tree || _shuttingDown) {
         return;
     }
+
     PerformanceTimer perfTimer("EntityTreeRenderer::mouseDoublePressEvent");
     PickRay ray = _viewState->computePickRay(event->x(), event->y());
-
-    bool precisionPicking = !_dontDoPrecisionPicking;
-    RayToEntityIntersectionResult rayPickResult = findRayIntersectionWorker(ray, Octree::Lock, precisionPicking);
+    RayToEntityIntersectionResult rayPickResult = _getPrevRayPickResultOperator(_mouseRayPickID);
     if (rayPickResult.intersects) {
         //qCDebug(entitiesrenderer) << "mouseDoublePressEvent over entity:" << rayPickResult.entityID;
 
@@ -622,8 +597,7 @@ void EntityTreeRenderer::mouseReleaseEvent(QMouseEvent* event) {
 
     PerformanceTimer perfTimer("EntityTreeRenderer::mouseReleaseEvent");
     PickRay ray = _viewState->computePickRay(event->x(), event->y());
-    bool precisionPicking = !_dontDoPrecisionPicking;
-    RayToEntityIntersectionResult rayPickResult = findRayIntersectionWorker(ray, Octree::Lock, precisionPicking);
+    RayToEntityIntersectionResult rayPickResult = _getPrevRayPickResultOperator(_mouseRayPickID);
     if (rayPickResult.intersects) {
         //qCDebug(entitiesrenderer) << "mouseReleaseEvent over entity:" << rayPickResult.entityID;
 
@@ -671,14 +645,11 @@ void EntityTreeRenderer::mouseMoveEvent(QMouseEvent* event) {
     if (!_tree || _shuttingDown) {
         return;
     }
+
     PerformanceTimer perfTimer("EntityTreeRenderer::mouseMoveEvent");
-
     PickRay ray = _viewState->computePickRay(event->x(), event->y());
-
-    bool precisionPicking = false; // for mouse moves we do not do precision picking
-    RayToEntityIntersectionResult rayPickResult = findRayIntersectionWorker(ray, Octree::TryLock, precisionPicking);
+    RayToEntityIntersectionResult rayPickResult = _getPrevRayPickResultOperator(_mouseRayPickID);
     if (rayPickResult.intersects) {
-
         glm::vec2 pos2D = projectOntoEntityXYPlane(rayPickResult.entity, ray, rayPickResult);
         PointerEvent pointerEvent(PointerEvent::Move, MOUSE_POINTER_ID,
                                   pos2D, rayPickResult.intersection,
diff --git a/libraries/entities-renderer/src/EntityTreeRenderer.h b/libraries/entities-renderer/src/EntityTreeRenderer.h
index f4909a2036..b70252d68c 100644
--- a/libraries/entities-renderer/src/EntityTreeRenderer.h
+++ b/libraries/entities-renderer/src/EntityTreeRenderer.h
@@ -59,6 +59,10 @@ public:
     float getEntityLoadingPriority(const EntityItem& item) const { return _calculateEntityLoadingPriorityFunc(item); }
     void setEntityLoadingPriorityFunction(CalculateEntityLoadingPriority fn) { this->_calculateEntityLoadingPriorityFunc = fn; }
 
+    void setMouseRayPickID(QUuid rayPickID) { _mouseRayPickID = rayPickID; }
+    void setMouseRayPickResultOperator(std::function<RayToEntityIntersectionResult(QUuid)> getPrevRayPickResultOperator) { _getPrevRayPickResultOperator = getPrevRayPickResultOperator;  }
+    void setSetPrecisionPickingOperator(std::function<void(QUuid, bool)> setPrecisionPickingOperator) { _setPrecisionPickingOperator = setPrecisionPickingOperator; }
+
     void shutdown();
     void update();
 
@@ -130,7 +134,7 @@ public slots:
 
     // optional slots that can be wired to menu items
     void setDisplayModelBounds(bool value) { _displayModelBounds = value; }
-    void setDontDoPrecisionPicking(bool value) { _dontDoPrecisionPicking = value; }
+    void setPrecisionPicking(bool value) { _setPrecisionPickingOperator(_mouseRayPickID, value); }
 
 protected:
     virtual OctreePointer createTree() override {
@@ -150,10 +154,6 @@ private:
     void checkAndCallPreload(const EntityItemID& entityID, bool reload = false, bool unloadFirst = false);
 
     QList<ModelPointer> _releasedModels;
-    RayToEntityIntersectionResult findRayIntersectionWorker(const PickRay& ray, Octree::lockType lockType,
-                                                                bool precisionPicking, const QVector<EntityItemID>& entityIdsToInclude = QVector<EntityItemID>(),
-                                                                const QVector<EntityItemID>& entityIdsToDiscard = QVector<EntityItemID>(), bool visibleOnly=false,
-                                                                bool collidableOnly = false);
 
     EntityItemID _currentHoverOverEntityID;
     EntityItemID _currentClickingOnEntityID;
@@ -176,12 +176,15 @@ private:
     AbstractViewStateInterface* _viewState;
     AbstractScriptingServicesInterface* _scriptingServices;
     bool _displayModelBounds;
-    bool _dontDoPrecisionPicking;
 
     bool _shuttingDown { false };
 
     QMultiMap<QUrl, EntityItemID> _waitingOnPreload;
 
+    QUuid _mouseRayPickID;
+    std::function<RayToEntityIntersectionResult(QUuid)> _getPrevRayPickResultOperator;
+    std::function<void(QUuid, bool)> _setPrecisionPickingOperator;
+
     class LayeredZone {
     public:
         LayeredZone(std::shared_ptr<ZoneEntityItem> zone, QUuid id, float volume) : zone(zone), id(id), volume(volume) {}
diff --git a/libraries/entities/src/EntitySimulation.cpp b/libraries/entities/src/EntitySimulation.cpp
index fbbc1bde71..6a1c359b5a 100644
--- a/libraries/entities/src/EntitySimulation.cpp
+++ b/libraries/entities/src/EntitySimulation.cpp
@@ -280,24 +280,24 @@ void EntitySimulation::moveSimpleKinematics(const quint64& now) {
 }
 
 void EntitySimulation::addDynamic(EntityDynamicPointer dynamic) {
-    QMutexLocker lock(&_mutex);
+    QMutexLocker lock(&_dynamicsMutex);
     _dynamicsToAdd += dynamic;
 }
 
 void EntitySimulation::removeDynamic(const QUuid dynamicID) {
-    QMutexLocker lock(&_mutex);
+    QMutexLocker lock(&_dynamicsMutex);
     _dynamicsToRemove += dynamicID;
 }
 
 void EntitySimulation::removeDynamics(QList<QUuid> dynamicIDsToRemove) {
-    QMutexLocker lock(&_mutex);
+    QMutexLocker lock(&_dynamicsMutex);
     foreach(QUuid uuid, dynamicIDsToRemove) {
         _dynamicsToRemove.insert(uuid);
     }
 }
 
 void EntitySimulation::applyDynamicChanges() {
-    QMutexLocker lock(&_mutex);
+    QMutexLocker lock(&_dynamicsMutex);
     _dynamicsToAdd.clear();
     _dynamicsToRemove.clear();
 }
diff --git a/libraries/entities/src/EntitySimulation.h b/libraries/entities/src/EntitySimulation.h
index 84d30c495d..1c633aa9dc 100644
--- a/libraries/entities/src/EntitySimulation.h
+++ b/libraries/entities/src/EntitySimulation.h
@@ -105,6 +105,7 @@ protected:
     SetOfEntities _simpleKinematicEntities; // entities undergoing non-colliding kinematic motion
     QList<EntityDynamicPointer> _dynamicsToAdd;
     QSet<QUuid> _dynamicsToRemove;
+    QMutex _dynamicsMutex { QMutex::Recursive };
 
 protected:
     SetOfEntities _entitiesToDelete; // entities simulation decided needed to be deleted (EntityTree will actually delete)
diff --git a/libraries/networking/src/HifiSockAddr.cpp b/libraries/networking/src/HifiSockAddr.cpp
index 217d3096f5..e2a3e79c79 100644
--- a/libraries/networking/src/HifiSockAddr.cpp
+++ b/libraries/networking/src/HifiSockAddr.cpp
@@ -113,6 +113,18 @@ QString HifiSockAddr::toString() const {
     return _address.toString() + ":" + QString::number(_port);
 }
 
+bool HifiSockAddr::hasPrivateAddress() const {
+    // an address is private if it is loopback or falls in any of the RFC1918 address spaces
+    const QPair<QHostAddress, int> TWENTY_FOUR_BIT_BLOCK = { QHostAddress("10.0.0.0"), 8 };
+    const QPair<QHostAddress, int> TWENTY_BIT_BLOCK = { QHostAddress("172.16.0.0") , 12 };
+    const QPair<QHostAddress, int> SIXTEEN_BIT_BLOCK = { QHostAddress("192.168.0.0"), 16 };
+
+    return _address.isLoopback()
+        || _address.isInSubnet(TWENTY_FOUR_BIT_BLOCK)
+        || _address.isInSubnet(TWENTY_BIT_BLOCK)
+        || _address.isInSubnet(SIXTEEN_BIT_BLOCK);
+}
+
 QDebug operator<<(QDebug debug, const HifiSockAddr& sockAddr) {
     debug.nospace() << sockAddr._address.toString().toLocal8Bit().constData() << ":" << sockAddr._port;
     return debug.space();
diff --git a/libraries/networking/src/HifiSockAddr.h b/libraries/networking/src/HifiSockAddr.h
index af939de736..b582198139 100644
--- a/libraries/networking/src/HifiSockAddr.h
+++ b/libraries/networking/src/HifiSockAddr.h
@@ -55,6 +55,8 @@ public:
 
     QString toString() const;
 
+    bool hasPrivateAddress() const; // checks if the address behind this sock addr is private per RFC 1918
+
     friend QDebug operator<<(QDebug debug, const HifiSockAddr& sockAddr);
     friend QDataStream& operator<<(QDataStream& dataStream, const HifiSockAddr& sockAddr);
     friend QDataStream& operator>>(QDataStream& dataStream, HifiSockAddr& sockAddr);
diff --git a/libraries/networking/src/LimitedNodeList.cpp b/libraries/networking/src/LimitedNodeList.cpp
index 1d094d923c..954b9685af 100644
--- a/libraries/networking/src/LimitedNodeList.cpp
+++ b/libraries/networking/src/LimitedNodeList.cpp
@@ -202,12 +202,12 @@ QUdpSocket& LimitedNodeList::getDTLSSocket() {
     return *_dtlsSocket;
 }
 
-bool LimitedNodeList::isPacketVerified(const udt::Packet& packet) {
+bool LimitedNodeList::isPacketVerifiedWithSource(const udt::Packet& packet, Node* sourceNode) {
     // We track bandwidth when doing packet verification to avoid needing to do a node lookup
     // later when we already do it in packetSourceAndHashMatchAndTrackBandwidth. A node lookup
     // incurs a lock, so it is ideal to avoid needing to do it 2+ times for each packet
     // received.
-    return packetVersionMatch(packet) && packetSourceAndHashMatchAndTrackBandwidth(packet);
+    return packetVersionMatch(packet) && packetSourceAndHashMatchAndTrackBandwidth(packet, sourceNode);
 }
 
 bool LimitedNodeList::packetVersionMatch(const udt::Packet& packet) {
@@ -256,7 +256,7 @@ bool LimitedNodeList::packetVersionMatch(const udt::Packet& packet) {
     }
 }
 
-bool LimitedNodeList::packetSourceAndHashMatchAndTrackBandwidth(const udt::Packet& packet) {
+bool LimitedNodeList::packetSourceAndHashMatchAndTrackBandwidth(const udt::Packet& packet, Node* sourceNode) {
 
     PacketType headerType = NLPacket::typeInHeader(packet);
 
@@ -298,14 +298,18 @@ bool LimitedNodeList::packetSourceAndHashMatchAndTrackBandwidth(const udt::Packe
     } else {
         QUuid sourceID = NLPacket::sourceIDInHeader(packet);
 
-        // figure out which node this is from
-        SharedNodePointer matchingNode = nodeWithUUID(sourceID);
+        // check if we were passed a sourceNode hint or if we need to look it up
+        if (!sourceNode) {
+            // figure out which node this is from
+            SharedNodePointer matchingNode = nodeWithUUID(sourceID);
+            sourceNode = matchingNode.data();
+        }
 
-        if (matchingNode) {
+        if (sourceNode) {
             if (!PacketTypeEnum::getNonVerifiedPackets().contains(headerType)) {
 
                 QByteArray packetHeaderHash = NLPacket::verificationHashInHeader(packet);
-                QByteArray expectedHash = NLPacket::hashForPacketAndSecret(packet, matchingNode->getConnectionSecret());
+                QByteArray expectedHash = NLPacket::hashForPacketAndSecret(packet, sourceNode->getConnectionSecret());
 
                 // check if the md5 hash in the header matches the hash we would expect
                 if (packetHeaderHash != expectedHash) {
@@ -323,9 +327,9 @@ bool LimitedNodeList::packetSourceAndHashMatchAndTrackBandwidth(const udt::Packe
 
             // No matter if this packet is handled or not, we update the timestamp for the last time we heard
             // from this sending node
-            matchingNode->setLastHeardMicrostamp(usecTimestampNow());
+            sourceNode->setLastHeardMicrostamp(usecTimestampNow());
 
-            emit dataReceived(matchingNode->getType(), packet.getPayloadSize());
+            emit dataReceived(sourceNode->getType(), packet.getPayloadSize());
 
             return true;
 
diff --git a/libraries/networking/src/LimitedNodeList.h b/libraries/networking/src/LimitedNodeList.h
index f4ec47636b..f730bcfa17 100644
--- a/libraries/networking/src/LimitedNodeList.h
+++ b/libraries/networking/src/LimitedNodeList.h
@@ -286,7 +286,9 @@ public:
 
     void setPacketFilterOperator(udt::PacketFilterOperator filterOperator) { _nodeSocket.setPacketFilterOperator(filterOperator); }
     bool packetVersionMatch(const udt::Packet& packet);
-    bool isPacketVerified(const udt::Packet& packet);
+
+    bool isPacketVerifiedWithSource(const udt::Packet& packet, Node* sourceNode = nullptr);
+    bool isPacketVerified(const udt::Packet& packet) { return isPacketVerifiedWithSource(packet); }
 
     static void makeSTUNRequestPacket(char* stunRequestPacket);
 
@@ -352,7 +354,7 @@ protected:
 
     void setLocalSocket(const HifiSockAddr& sockAddr);
 
-    bool packetSourceAndHashMatchAndTrackBandwidth(const udt::Packet& packet);
+    bool packetSourceAndHashMatchAndTrackBandwidth(const udt::Packet& packet, Node* sourceNode = nullptr);
     void processSTUNResponse(std::unique_ptr<udt::BasePacket> packet);
 
     void handleNodeKill(const SharedNodePointer& node);
diff --git a/libraries/physics/src/PhysicalEntitySimulation.cpp b/libraries/physics/src/PhysicalEntitySimulation.cpp
index fe507ed1ee..b6f460cf39 100644
--- a/libraries/physics/src/PhysicalEntitySimulation.cpp
+++ b/libraries/physics/src/PhysicalEntitySimulation.cpp
@@ -348,8 +348,7 @@ void PhysicalEntitySimulation::addDynamic(EntityDynamicPointer dynamic) {
 void PhysicalEntitySimulation::applyDynamicChanges() {
     QList<EntityDynamicPointer> dynamicsFailedToAdd;
     if (_physicsEngine) {
-        // FIXME put fine grain locking into _physicsEngine
-        QMutexLocker lock(&_mutex);
+        QMutexLocker lock(&_dynamicsMutex);
         foreach(QUuid dynamicToRemove, _dynamicsToRemove) {
             _physicsEngine->removeDynamic(dynamicToRemove);
         }
@@ -360,9 +359,10 @@ void PhysicalEntitySimulation::applyDynamicChanges() {
                 }
             }
         }
+        // applyDynamicChanges will clear _dynamicsToRemove and _dynamicsToAdd
+        EntitySimulation::applyDynamicChanges();
     }
-    // applyDynamicChanges will clear _dynamicsToRemove and _dynamicsToAdd
-    EntitySimulation::applyDynamicChanges();
+
     // put back the ones that couldn't yet be added
     foreach (EntityDynamicPointer dynamicFailedToAdd, dynamicsFailedToAdd) {
         addDynamic(dynamicFailedToAdd);
diff --git a/scripts/system/controllers/handControllerGrab.js b/scripts/system/controllers/handControllerGrab.js
index 9318873f64..f6eec7ab76 100644
--- a/scripts/system/controllers/handControllerGrab.js
+++ b/scripts/system/controllers/handControllerGrab.js
@@ -1182,7 +1182,7 @@ function MyController(hand) {
     this.fullEnd = fullEnd;
     this.laserPointer = LaserPointers.createLaserPointer({
         joint: (hand == RIGHT_HAND) ? "_CAMERA_RELATIVE_CONTROLLER_RIGHTHAND" : "_CAMERA_RELATIVE_CONTROLLER_LEFTHAND",
-        filter: RayPick.PICK_ENTITIES | RayPick.PICK_OVERLAYS,
+        filter: RayPick.PICK_ENTITIES | RayPick.PICK_OVERLAYS | RayPick.PICK_INCLUDE_NONCOLLIDABLE,
         maxDistance: PICK_MAX_DISTANCE,
         posOffset: getGrabPointSphereOffset(this.handToController()),
         renderStates: renderStates,
@@ -1191,7 +1191,7 @@ function MyController(hand) {
     });
     this.headLaserPointer = LaserPointers.createLaserPointer({
         joint: "Avatar",
-        filter: RayPick.PICK_ENTITIES | RayPick.PICK_OVERLAYS,
+        filter: RayPick.PICK_ENTITIES | RayPick.PICK_OVERLAYS | RayPick.PICK_INCLUDE_NONCOLLIDABLE,
         maxDistance: PICK_MAX_DISTANCE,
         renderStates: headRenderStates,
         faceAvatar: true,
diff --git a/scripts/system/tablet-goto.js b/scripts/system/tablet-goto.js
index fb842d1314..96ed3e3f59 100644
--- a/scripts/system/tablet-goto.js
+++ b/scripts/system/tablet-goto.js
@@ -42,6 +42,8 @@
     });
     
     function fromQml(message) {
+        console.debug('tablet-goto::fromQml: message = ', JSON.stringify(message));
+
         var response = {id: message.id, jsonrpc: "2.0"};
         switch (message.method) {
         case 'request':
@@ -98,6 +100,8 @@
             button.editProperties({isActive: shouldActivateButton});
             wireEventBridge(true);
             messagesWaiting(false);
+            tablet.sendToQml({ method: 'refreshFeeds' })
+
         } else {
             shouldActivateButton = false;
             onGotoScreen = false;