Yikes. Is the performance on the Steam Deck worse than on Stadia? Using Stadia, we overlooked a lot of problems chocking it up to EA. The biggest problem was the camera view falling into the floor or going through hills, etc. That was frustrating beyond belief.
For some reason steam release doesn’t have pad support, so it must be super awkward to control. BG3 is also rather unoptimised and Steam deck isn’t the most powerful of hardwares.
Stil, as Sven mentioned D:OS2 worked on Steamdeck without any additional work, so hopefully Larian will aim for the same for BG3.
However, traditionally Larian games get a more focused console/pad support a year after initial release as they work on console port, so if they plan to do the same for BG3, it might take a while before UI is fully adapted to non-PC play.