The problem is: when I move my mouse, my FPS tanks. I did change the polling rate from 1000 to 500 to 125, and each time I dropped the polling rate, the FPS didn't tank as much. But even at 125 the game is a sloppy mess to play.
This happens in game and in the menu before starting a match or campaign.
9700k 2080ti Utrawide @ 1600p Razer mouse and software