A sharp drop in FPS and 100% load on the video card (Far Cry 6)

After entering the menu / after the cutscene, the video card starts to load at 100% and gives out 10 fps, only restarting the game helps, but only until the next. entering the menu / cutscenes.
I play at ultra at a stable 60 fps.
Who knows how to fix the problem, please help.