What GPU do you have again?
That's UE5 for you right there. Don't know what you're using, but in general, don't use in game fps limiters, I always use RivaTuner for example.
It's typical for UE5 games where the devs just took the default settings and made a game without diving deep into optimization. Which this 33 people dev team clearly couldn't prioritize. It results in super shitty asset streaming, bad CPU utilization, bad utilization of multiple cores, resulting in the uneven performance.
The only way to get a somewhat smooth experience is to have very high fps and cap it at a significantly lower frame rate. I just switched from 5k and DLAA (I was getting +80fps) to 3440x1440 and DLSS Quality. Now getting around 140fps that feel like garbage unlocked, but I locked it down to 60fps. That feels mostly smooth, just some tiny traversal hitches but nothing too bad.
I suggest trying this mod, that should reduce the stuttering in general:
A proper solution to mitigate stuttering and performance issues. It optimizes CPU and GPU efficiency, reduces latency, and improves streaming and memory management - all without sacrificing the game's
www.nexusmods.com