With my 5800x and 3080 I get around 40fps on my quest 2, with most settings fairly low (but not rock bottom). In 2d I can get around 60 to 70fps pretty much maxed out at 3840x1600 and in airliners I am ever so slightly cpu bottlenecked in big airports. I did turn up static airplane traffic to 100 though so major airports are packed with planes instead of being empty.
So to answer your question, you need a 3090 if you want 60fps locked and a serious cpu to feed it. 5800x min or a fast Intel chip. The update did make a huge difference to alleviate the cpu bottleneck, but you still need fast cores.