Did you mean Oculus DK2, or do you have this running in Gear VR? I'm using the new "native VR" functionality in Unity, so I'm not actually sure which VR devices are supported :)
Oh, I meant that I tried your game wit my DK2. I also have a gear vr. What I meant is that sometimes the gear vr will lose head tracking if the phone is starting to overheat. When that happens, everything is attached to your head. So, originally I thought it was a driver thing for DK2.