The same problem!! I played with everything at maximum 144 fps and after the last update of the game and from Nvidia, I couldn't even play with everything at minimum. FPS keeps dropping by half.
Finally fixed it !!!!
After trial and error and reinstalling the game and trying out different drivers even reinstalling windows nothing worked
finally found out the issue is nvidia drivers !! Everyone roll back to nvidia Driver Version: 537.13 - Release Date: Tue Aug 22, 2023
game runs like butter at max setting and no frames drop at all. All stutter gone and lag gone
goodluck everyone !!
