Performance issue in Unity 2019.3.0f6 editor with VR enabled

Unity Engine
1

I had upgraded my project to 2019.3.0f6. In earlier version everything is working fine. But in 2019.3.0f6 editor, there was a big performance hit. The performance hit is because of
FrameEvents.XRBeginFrame → XR.WaitForGPU → Gfx.WatForRenderThread → Semaphore.WaitForSignal

But with the standalone build of my project with the same editor 2019.3.0f6, it is again working smooth. The issue I am facing is only when testing in unity editor. Can anyone suggest me a solution to overcome this problem ?

2

I’m also hitting in in 2019.4.7f1 on Oculus Quest using Vulkan. It looks like the graphics execution is halted until it the time it believes the game will need in terms of time to render and then does it, but then sometimes it is wrong and the frame will go slightly over which causes a frame skip