Listen, first and foremost, any PC player should be supporting one another; even if you aren't having these troubles, you should still up-vote to assist us.
The game's performance plummets after 1-3 hours of play, and the races resemble the Matrix movie, with slow motion for no apparent reason and significant frame rate drops. It almost makes me believe it's a strange memory leak or a bad port.
Specs:
11900K
3080Ti
RAM: 32 GB