Comment on There's a reason we aren't as harsh on the Steam Deck. Actually, a couple.
russjr08@bitforged.space 2 months agoIIRC they also just recently launched a new setting that allows you to permanently set the target resolution for all games (this might still only be in the beta branch though).
Previously you had to go into each game’s settings from Steam, and change the resolution there (which might be how you missed it).