February 2021
@austinluppo Try reducing all the in-game graphics settings to the minimum. Do so at the Main Menu, then quit to desktop before loading a save. Try it with Advanced Rendering both off and on, and while in fullscreen and windowed mode, just to cover all options.
If none of this works, there might not be a good solution right now. I'd suggest installing the new version of Big Sur (11.2 rather than 11.1), which was released a few days ago. (You can see the version you're running by clicking the Apple icon in the upper left corner of your screen and selecting About This Mac.) There's no guarantee this will help, but it's possible.
February 2021