diff --git a/libraries/render-utils/src/DeferredLightingEffect.cpp b/libraries/render-utils/src/DeferredLightingEffect.cpp
index fb73ee0dfc..91d196f896 100644
--- a/libraries/render-utils/src/DeferredLightingEffect.cpp
+++ b/libraries/render-utils/src/DeferredLightingEffect.cpp
@@ -135,7 +135,7 @@ static void loadLightProgram(int programId, bool lightVolume, gpu::PipelinePoint
     if (lightVolume) {
         PrepareStencil::testShape(*state);
        
-        state->setCullMode(gpu::State::CULL_NONE);
+        state->setCullMode(gpu::State::CULL_BACK);
         //state->setCullMode(gpu::State::CULL_FRONT);
         //state->setDepthTest(true, false, gpu::GREATER_EQUAL);
         //state->setDepthClampEnable(true);
diff --git a/libraries/render-utils/src/deferred_light.slv b/libraries/render-utils/src/deferred_light.slv
index 7468be9655..0bc7a0f807 100644
--- a/libraries/render-utils/src/deferred_light.slv
+++ b/libraries/render-utils/src/deferred_light.slv
@@ -16,6 +16,7 @@
 
 layout(location=RENDER_UTILS_ATTR_TEXCOORD01) out vec4 _texCoord01;
 
+// NOTE: WE are assuming that the deferred lighting pass is always full screen so this texture transform is not needed (and cause problems on AMD)
 //layout(location=RENDER_UTILS_UNIFORM_LIGHT_TEXCOORD_TRANSFORM) uniform vec4 texcoordFrameTransform;
 
 void main(void) {