Hi everyone, I'm developing a Vive game with Unity using the standard settings of SteamVR, without the lab renderer. On the whole, I get good frame rates, but every now and then (10-20 seconds), there is a drop down below 60fps. This even happens if the headset is lying still on the floor and the controllers are off. There is no indication in the profiler that anything else except graphics is to blame, as it looks like this: What could be the cause of this? Also, all the time is reported to be spent in VR.WaitForGPU (and, given the yellow color, in VSync). Am I correct in assuming that says that the CPU is waiting for the GPU to finish operations, and if the GPU doesn't manage within its allocated time for the frame (11ms for 90fps) a drop will occur? Thanks!!