I'm surprised that nobody wrote about it but there is actually a solution (for those who own Nvidia graphic card). Set MinFrameTime.2 to 0.00000000, then go to Nvidia Control Panel and set desired Max Frame Rate number. It works for me.
Thank you very much for this. This is exactly what I did.
My pc just updated. I noticed immediately that in vvardenfell, while doing my writs, my FPS would sit at 64-63 ish when it usually was at 100, as that is what I had set my Nvidia refresh rate to. Luckily I found this thread, and I went to check what exactly went down through my view update history. Lo and behold, 'Feature update to Windows 10, version 2004' successfully installed on 9/15/20.
Is anyone else getting it where their FPS is normal for a while (30-60 mins), then it just plummets, and stays there? And every time you move, change camera position, there's obvious stuttering? And that this whole thing persists to the game menus (char select especially) when you log out of a character?
I have, and even with a new PC, I still do. I'm going through every addon I have to see if people are reporting symptoms similar to mine for any of them. It should just be the regular addons, though, not the libraries.