Not sure what flair to use for “update” but I got my rig to boot up MacOS high Sierra I’m soo happy! BUT!

Soo after getting MacOS high Sierra on my rig i economic that my graphics are stuttering. I installed the NVIDIA web drivers but that didn’t fix it. I wanna follow a YouTube guide but we all know what happens if we follow YouTube guides lol. Anyways! Any fix for this situation?