You can just change your resolution in game if that is the case. However you have to manually set it twice in this situation. It needs fixed. There is literally no reason to have a resolution setting in the steamdeck external display setting if it’s not going to work in game.
Nah, what game is giving you heck? I’m about to be 47 and still can hang in some games. For example I’m a ARAM junkie and get some attention here and there. Give me Fizz and I’ll piss off the whole enemy team 😁