Rast started to lag (a week ago it was 100-130 fps) (Rust)

Rast began terrible lag, even in menus I have 10-20 fps!!! similarly, on the server, did not play the week before everything was fine, fps was 100-120, and right now, went and is such a mess. game reinstalled, did not help
iron has nothing to do with battle network 4 in high-ultra with 120 fps stable