Devcommands is your friend. After posting about my awesome 2 star boar farm yesterday I had the Forest is Moving. No matter what I did the mobs kept attacking my boars. I could not pull aggro. I couldn't tell if my pigs were even fighting back. That many two star boars should have obliterated the attack. In the end they were all dead.

That's what I consider an unplayable game mechanic. I just spawned in more boars, then tamed them with devcommands. When the forest moved again I just used devcommands to killenemies. I enjoy progression in games. Valheim does a little too much wind in my face to want to play it as the devs intended. Life is too short.

There is a mod that stops the events. I have not tried it, but it's tempting.