Originally posted by Schism:

I tried all the YouTube video fixes and honestly, none of them did anything for me. They are all placebo.

The only thing that worked for me was a mod I downloaded to remove fog/mists from Valheim. I originally downloaded this mod because I found the mist in Mistlands to be way over the top and wanted to get rid of it. This mod had a huge side effect of drastically improving my FPS EVERYWHERE in the game.

https://valheim.thunderstore.io/package/Azumatt/MistBeGone/

What GPU are you using? If it made that big of a difference, part of your silicon is defective The part that is handling Tesselation most likely, but it could also be VRAM)

First Gen RTX2000 series using Micron Memories are ALL on borrowed time, and are having critical failures that first manifest as obnoxiously slow or inconsistent FPS in SOME games.