Samples stutter when using OpenVR in Debug Win32

[chaoticbob]

This is a known issue. It may be related to the driver. Will investigate.

[simongeilfus]

Hey Hai! I'm seeing the same thing on the Rift.

[chaoticbob]

Hey Simon,

Thanks for checking it out! Which hardware and driver version are you running?

[simongeilfus]

CV1, GTX1070, i7 6700k and latest drivers.
Let me do a few more tests.

[simongeilfus]

The difference is really big but maybe it's just the usual Release/Debug thing on windows?
Here's a few screenshots with the "App Render Timings"; (the compositor is absolutely fine in Debug mode):

CoordSysBasics Debug Win32

CoordSysBasics Debug x64

CoordSysBasics Release Win32

CoordSysBasics Release x64

[chaoticbob]

Thanks for the numbers and screenshots. I assume you're using the Oculus SDK and not going through OpenVR?

[simongeilfus]

I don't know, does the vr::Context automatically pick the right API? (I'm running your samples untouched...)
edit: Actually it's pretty obvious that it's using the Oculus Sdk as I have this annoying fireplace popping up every time I launch a sample.

[chaoticbob]

Lets leave this open to see if there's more reports of this. I can't seem to reproduce this on my setup.

[notlion]

I'm also seeing lag on Win32, and x64 too, although it's not nearly as bad there. On x64 the samples barely hold ~30fps in Debug as opposed to running solidly at ~90fps in Release.

My setup:
Vive, GTX 980Ti 6GB, i7 3770K 3.5GHz, 16GB RAM, Camera on @ 30fps, Bluetooth on

[notlion]

Tried disabling bluetooth/camera, but it has no effect on the frame rate. Interestingly though, and I suppose this might be expected behavior, but the Steam VR menu seems to run at full 90fps even when the Cinder sample is at 30fps.