It is a UE5 game, so don’t expect it to run great. But it’s verified and the minimum specs requirements are in line with other high end titles that run acceptably on the deck.
Edit: performance first impressions from SteamDeckHQ. Sounds like it runs and a pretty consistent 30fps, with some small dips outside near large groups of people. Reviewer was using XESS upscaling on performance.
I think another studio was handling a lot of it, so it may be less jank than a typical Bethesda game.