I'm not affiliated with this YouTuber, but I thought this might be useful to someone else. I have a RTX 3080/Ryzen 5800x/32 GB machine and was hovering around 30-40 FPS even after turning a lot of settings down. I think I just haven't kept up with the best combination of settings. This video got me up to an average of 70-80 FPS (except for in denser areas, where it can drop to 45).