Ok so here's the lowdown, runs really good, maxed everything and enabled ray tracing. no DLSS only FSR 1 and FSR2 but didn't use those as the sharpness is slightly reduced although fps is increased to over 100 in Quality FSR 2. Without any FSR it's around 70fps outside, over 80fps inside. 3440x1440. Looks really crisp, really smooth. No real stutters, couple of minor stutter before entering the house etc but nothing to write about.
Ultrawide supported! But cutscenes are fixed 16:9.
Not my kind of RE game, I remember now why I didn't really finish RE4 before. I much preferred RE3 Remake and Village. The black levels are crushed in this, it is NOT OLED optimised. You can bump the brightness all the way down after setting min/max for white/black, but even still pitch black is not actually pitch black, there's a crushed tone to pure darkness similar to RE2 Remake but not as bad as that. It's passable, but not what I would call OLED perfect like Village and RE3 was.
Oh yeah mouse camera sensitivity by default was way too low, had to max it out and only lower it a bit from max for the aim sensitivity. There is no hardware cursor so there is an ever so slight bit of latency but it's basically a non issue.
Screens: