I am dynamically adjusting ViewportRenderScale on GO and Quest in Unity 2018.4 in late update. With the recent OVRPlugin update there is a clear flicker/shifted frame drop when changing the ViewportRenderScale at runtime which was not present previously. Have there been any recent changes that could cause this? I am using foveated rendering if that is relevant?
I ended up completely disabling runtime changing of the ViewPortRender scale because of this problem. This is a shame because when it previously worked it was a really nice way to stabilize performance depending on the current graphical load.