Need information or Help

Since the update it's going top and down for me, at the release huge frame drop and it was impossibleto play for me, few days after i was able to play the game at 60fps (except for some very precise location) and with the introduction of stillwater rework it fucked it all, i can't play the game, i have 60-30 fps but never clean and stable 60 FPS

If someone have information about performance fix or can help me to set up my game it could be awesome
Thanks you !

spec:
-I5-12600KF
-Geforce RTX 4060 (Vram 8Go)
-16 Go RAM