FPS Issues in 3.28

Hi , I would love to be helped for my FPS Issues. When I had a 2070 and bad cpu i was having a hard time and got to many parameters to run the game .

I've now changed for a 5070 with good cpu and had no problems in 3.27.

This season i've seen that my fps go down to 60 and I'm having severe lags. I've tried to put all the shadows at minimum , same for texture , did the 100 go shaders cache on my gpu but nothing work.

The really weird part is , if I change the screen display and revert back on the first display , everything go up to 240 fps.

Did some tests , it's the instance change that makes my fps drop.

Map 1 240 fps , map 2 180 fps , map 3 110 fps , map 4 60 fps and severe lags. Change screen display -> back to 240 fps for 1 map.

The only thing that changed is AMD Software launching alone on my PC to enhance display quality but i've deactivated this so i've not clue. Is anyone experiencing fps issue too ?