Hm seems like they are still having this issue. About a month ago it was either valve or COD that put out an update and it broke the game. Never tested regular multiplayer because of the hacking problem they’ve got. But anything zombies, the game would just free and crash.
I plan on trying it tonight actually. It was between Fae Farms and Coral Island but Coral Island just came out and it was pushed out by the publisher even though the game wasn’t ready and had tons of bugs/issues.
Picked up:
Wanted some easy going games and I think I picked a few good ones
Piggybacking off of the other commenter. You could alternatively install decky and put storage cleaner on your system. It’ll show you all your games that you installed that have shader and compat data stored. I just went through mine last night and cleared roughly 5-7gb of data off my internal drive from games I wasn’t playing.
If you go normally into your Windows boot. And go to your recycle bin. Do you see a SteamOS and EFI Files in that bin?
I had a similar issue a month ago where it booted fine but for some reason my system moved those files into the recycle bin and rendered my ability to boot into SteamOS obsolete. Even though it gave me the option to. I would check this and see if this is your cause