Valheim doesnt take up much space on your hard drive, and it looks beautiful with its graphics, however, due to the game being in Early Access it is pretty unoptimized. The devs have tried to curtail this to some extent, but the fact remains that Valheim attempts to use as much power as your computer can muster. It is recommended that if you cant get it to work with something like Vulkan to simply refund it and wait a year or two when its presumably forecast to leave EA, and coincidentally get some optimization done. Vulkan, if you need to play now, I hear has better performance, presumably at the cost of stability.

This game is made on Unity, and as such some crashes you may experience may not be fixable by the devteam.