I had a similar experience with CP2077. Their implementation is FSR3, not 3.1, which is essentially 2.2 with frame gen. They won't implement 3.1 because FG is decoupled and allows people to use that with DLSS on 3000 cards and older. Nvidia don't want that and it's an Nvidia sponsored game. I'd be very surprised if they implement FSR4 so mods may be the way to go.Please oh please AMD make FSR4 available on RDNA3.
If I use upscaling, my go to is XeSS 1.3 UQ. FSR3 quality in Cyberpunk still looks unacceptably bad to my eye.
Honestly wonder if going back to FSR1, which had the option to manually set the resolution scaling (say from 80-85%) would look better than the highest setting of FSR3 (quality) which I believe uses 65% res. Sure, the framerate gained would be less, but then XeSS UQ only improves my framerate half as much as FSR3 Quality, but looks a whole lot better.
The same principle applies if there's a significantly lower performance uplift with FSR4 on RDNA3 than on RDNA4 - I'd still chose FSR4 over the current FSR.
Other than that, AMD cards with upscaling is a non-starter on CP2077, sadly.