diff --git a/interface/src/Audio.cpp b/interface/src/Audio.cpp
index 2cbe3a062f..271bcd5279 100644
--- a/interface/src/Audio.cpp
+++ b/interface/src/Audio.cpp
@@ -1419,7 +1419,7 @@ bool Audio::switchOutputToAudioDevice(const QAudioDeviceInfo& outputDeviceInfo)
 // proportional to the accelerator ratio. 
 
 #ifdef Q_OS_WIN
-const float Audio::CALLBACK_ACCELERATOR_RATIO = 0.4f;
+const float Audio::CALLBACK_ACCELERATOR_RATIO = 0.1f;
 #endif
 
 #ifdef Q_OS_MAC
diff --git a/interface/src/Util.cpp b/interface/src/Util.cpp
index 07ca65b286..5ce1435bd6 100644
--- a/interface/src/Util.cpp
+++ b/interface/src/Util.cpp
@@ -21,6 +21,8 @@
 
 #include <SharedUtil.h>
 
+#include <QThread>
+
 #include "InterfaceConfig.h"
 #include "ui/TextRenderer.h"
 #include "VoxelConstants.h"
@@ -409,8 +411,44 @@ void runTimingTests() {
     
     float NSEC_TO_USEC = 1.0f / 1000.0f;
     elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
-    qDebug("QElapsedTimer::nsecElapsed() usecs: %f", elapsedUsecs / (float) numTests);
+    qDebug("QElapsedTimer::nsecElapsed() usecs: %f", elapsedUsecs);
     
+    // Test sleep functions for accuracy
+    startTime.start();
+    QThread::msleep(1);
+    elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
+    qDebug("QThread::msleep(1) ms: %f", elapsedUsecs / 1000.0f);
+
+    startTime.start();
+    QThread::sleep(1);
+    elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
+    qDebug("QThread::sleep(1) ms: %f", elapsedUsecs / 1000.0f);
+
+    startTime.start();
+    usleep(1);
+    elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
+    qDebug("usleep(1) ms: %f", elapsedUsecs / 1000.0f);
+
+    startTime.start();
+    usleep(10);
+    elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
+    qDebug("usleep(10) ms: %f", elapsedUsecs / 1000.0f);
+
+    startTime.start();
+    usleep(100);
+    elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
+    qDebug("usleep(100) ms: %f", elapsedUsecs / 1000.0f);
+
+    startTime.start();
+    usleep(1000);
+    elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
+    qDebug("usleep(1000) ms: %f", elapsedUsecs / 1000.0f);
+
+    startTime.start();
+    usleep(15000);
+    elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
+    qDebug("usleep(15000) ms: %f", elapsedUsecs / 1000.0f);
+
     // Random number generation
     startTime.start();
     for (int i = 0; i < numTests; i++) {
diff --git a/libraries/shared/src/SharedUtil.cpp b/libraries/shared/src/SharedUtil.cpp
index f29e8e3345..e4d2e1c835 100644
--- a/libraries/shared/src/SharedUtil.cpp
+++ b/libraries/shared/src/SharedUtil.cpp
@@ -26,6 +26,7 @@
 #include <QtCore/QDebug>
 #include <QDateTime>
 #include <QElapsedTimer>
+#include <QThread>
 
 #include "OctalCode.h"
 #include "SharedUtil.h"
@@ -415,13 +416,17 @@ void printVoxelCode(unsigned char* voxelCode) {
 
 #ifdef _WIN32
     void usleep(int waitTime) {
-        __int64 time1 = 0, time2 = 0, sysFreq = 0;
-
-        QueryPerformanceCounter((LARGE_INTEGER *)&time1);
-        QueryPerformanceFrequency((LARGE_INTEGER *)&sysFreq);
-        do {
-            QueryPerformanceCounter((LARGE_INTEGER *)&time2);
-        } while( (time2 - time1) < waitTime);
+        const quint64 BUSY_LOOP_USECS = 2000;
+        quint64 compTime = waitTime + usecTimestampNow();
+        quint64 compTimeSleep = compTime - BUSY_LOOP_USECS;
+        while (true) {
+            if (usecTimestampNow() < compTimeSleep) {
+                QThread::msleep(1);
+            }
+            if (usecTimestampNow() >= compTime) {
+                break;
+            }
+        }
     }
 #endif