Steps to reproduce:

1) Download attached project 'TurboButtonDaydreamPerfSample.zip' and open in Unity
2) Make sure Virtual Reality Supported is enabled and Virtual Reality SDKs set to Daydream in Player Settings
3) Build and run 'prd-Forest-02-atls' scene on a device
4) Check FPS on the screen
----- Should be around 40-45 FPS(check attached screenshot '5.5.0b7.png')
5) Now open this project in 5.4 GVR13
6) Build and run 'prd-Forest-02-atls' scene on a device
----- Should be stable 60 FPS

Expected result: FPS should be stable 60FPS as in 5.4 GVR13
Actual result: FPS is much lower in 5.6.x version compared to 5.4 GVR13

Reproduced with:
5.6.0a6, 5.6.0b7
Note: This feature started since 5.6.0a6 in Unity 5.6.x

DUT: Google Pixel XL[marlin], Adreno 530, OS version 7.1