I’m having a similar very good experience overall. I am running 10850k, 3090 and 32gb RAM and Quest 2 at resolution 2688*2784, 100 render scale in game and settings high or ultra. I have also put the terrain precache to On and LODs to 300% in the config file, which shows buildings almost as far as the eye can see. With this I am getting 20-30fps depending on location, which is flyable for me.
I note that even at these settings the sim only consumes 7-9gb of my 24gbp VRAM - it is possible to increase this by upping the LODs even further but the framerate becomes unplayable. So I think a 3080 still remains the better investment over the 3090!
Main SU5 VR bugs remaining:
-Shimmering on some buildings (Asobo unable to reproduce, see other threads)
-Aliasing on overlay windows (Asobo working on fix)
-Water reflections broken
-Overall too bright/washed out (brightness slider hopefully coming)
-Some runway objects like taxi signs popping in at close range
-Artifacts on horizon above clouds when flying high altitude
-Some checkerboarding/frustrum culling on head turn at airports or over sea