Originally posted by Kryten:

by default it only uses 512MB vram max(and probably because its not optimized yet), you might want to increase that....that is what the custom graphics mod is for.

That might differ from GPU to GPU and the settings. Prior to opening the game, my GPU used 1.3GB of VRAM @ 34c temp. While Valheim is opened, the GPU is using 2.2GB of VRAM @ 54c temp. Perhaps it's dependent on the max VRAM your GPU has?

Regardless, the HD texture mod and FarmGrid are great mods to use.