Make sure you don't have "half-rate shading" turned on the the deck battery settings. I do see a protondb report with similar issues, but everywhere else I see the game discussed no one seems to be complaining about it.
Steam Deck
A place to discuss and support all things Steam Deck.
Replacement for r/steamdeck_linux.
As Lemmy doesn't have flairs yet, you can use these prefixes to indicate what type of post you have made, eg:
[Flair] My post title
The following is a list of suggested flairs:
[Discussion] - General discussion.
[Help] - A request for help or support.
[News] - News about the deck.
[PSA] - Sharing important information.
[Game] - News / info about a game on the deck.
[Update] - An update to a previous post.
[Meta] - Discussion about this community.
Some more Steam Deck specific flairs:
[Boot Screen] - Custom boot screens/videos.
[Selling] - If you are selling your deck.
These are not enforced, but they are encouraged.
Rules:
- Follow the rules of Sopuli
- Posts must be related to the Steam Deck in an obvious way.
- No piracy, there are other communities for that.
- Discussion of emulators are allowed, but no discussion on how to illegally acquire ROMs.
- This is a place of civil discussion, no trolling.
- Have fun.
Oh shit, that was turned on. No idea why it was though, as I normally use per-game profiles. Thanks for the suggestion!
Should edit your post with the solution so others can see!
You're not an idiot, I had the same issue with last epoch and it took me a while to understand. Half rate shadering has no side effects on most games so I didn't see this coming 🙍♂️
Wait, it actually does something?
Try setting it to use proton experimental, newer games sometimes depend on features that aren't in the stable versions of proton yet (or are at least buggier/worse in the stable versions)
Edit: also try launching the game from desktop mode. The compositor in steam mode is Wayland-based and desktop mode uses an X11 session by default. The issues you're describing sound a bit like something that's happened to me running games under Wayland on my laptop