Hi! We are developing a VR experience for the Rift and had been successfully keeping our frame rate at 90 FPS in builds in 4.22.
We recently moved to 4.23 and realized that while our in-editor VR preview is still running at 90 FPS, the build framerate drops to 70FPS no matter the content of the map, or the resolution/quality settings of the build, making it seem clamped in some way. (We do not have framerate smoothening enabled for the project.) This could point to some kind of hardware issue, however we have tested the build on several different machine configurations and come out with 70FPS no matter what. (We have also confirmed that previous 4.22 builds continue to run at 90FPS on the same various hardware configurations.)
Has anyone else experienced anything similar since moving to 4.23? Is there a possibility that there is something is clamping the framerate that we are not aware of?
This is a build with a very simple scene to illustrate the problem if anyone is interested: