Originally posted by Bola,-,:

Does anyone know how to remove the shadows from this game? because that's the only thing that makes it lag so much

How do you know that if you can't/don't disable the shadows first to actually see/measure a difference?

You can try some of these mods:
https://www.nexusmods.com/valheim/mods/1587
https://www.nexusmods.com/valheim/mods/categories/3/?BH=2