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.
Very much so. The very reason why we want more fps is to have less input lag, that’s my personal take anyway. That’s the only reason why I have a beefy computer, so the game can respond quicker (and give me feedback quicker as well).