I have been having VR controller issues in the last few 11.50 betas, mostly with X-Plane losing assignments to the axis and buttons on the hand controllers and not allowing them to be reassigned.
It started to look like this issue:
But the fix for that one, doesn’t exist anymore. That led me to this thread where others are having the same issue:
I enabled the VR Mouse Pointer (and assigned the key to disable/enable it to a readily accessible button). 
My performance as been sporadic. At first I was getting great performance with Vulkan enabled but then in the last beta (11.50b4) I seemed to lose it. I did notice that the fpsVR app (or was it vrFPS) was indicating that my processor was the bottleneck but I also had crashes any time I turned on any weather other than clear skies (it would complain about not having enough VRAM available (2080 Super here)) and die. I updated to 11.50b6 last night and didn’t notice any change. Going to try enabling weather again to see if that is fixed.
The X-Plane Developer blog (Blog - X-Plane Developer) notes that the focus is on crashes at the moment with optimizations coming after that. There is a good chance that there is extra debug instrumentation all over the current beta builds, so that is likely slowing things down as well.