Hello VIP854.

I am not sure why, but something with the 2000 series Nvidia cards makes them have worse performance than 1000 and 3000 series GPU with Valheim.

I have been trying to test this for a long while, but it always seems to be diffrent issues with each card, (2060,2070,2080) and each manufactures (MSI, Asus, etc.)

This video is one we post alot on discord when users are having bad FPS and some get helped by it =)

https://www.youtube.com/watch?v=6IBkMW39egU