I was trying out FSR4 on my RX 6800 XT, Fedora 42. Works really well and it easily beats FSR3 in visuals even on Performance. It does have a significant performance hit vs FSR3 though but it still works out to be a bit faster than a native rendering on Quality.
That’s awesome. Not a fan of using upscaling tech generally but since they keep trying to improve it, i might give this a try on my 6950xt out of curiousity.