Mouse input stutters / jitters independent of framerate, controller fine

Happened to me as well, tried controller and was completely fine, smooth as ever and then when I played MNK, 160 FPS consistently but the game felt like I was about 30-40 when moving around on mouse, really hope something gets sorted, I don’t  want to play controller on this game at all, felt a little better when turned the res down but still noticeable