You don’t need to run it at 30 FPS, I get about 18 fps in busy areas and it’s smooth, the only card I’ve seen get c 30 FPS is a 3090 on youtube by flight sim guy.
I have a 1080ti but paired with a 5800x.
There are a number of schools of thought with regard how to supersample in vr, I use a q2 and follow tony tnt thread which keeps sampling at at 1.1 in oculus app and super samples in OTT at c1.6. I also reduce view to 0.85 on horizontal and vertical axis to help frame rate and have had some success with asw at 18hz. I set render in the sim at 70 with a mixture of medium and high settings and get a pretty good experience.
I was on 457.3 driver but recently switched to 466 which seems to be working well.
The only thing I can think might be holding you back is the cpu?
If you need any further detail on settings let me know.