I finally got around to playing the XCOM reboot entirely on my Deck and it was a fantastic experience. Those missions are short enough that I could pick it up, play a mission, and then put it down and do something, and come back to it.
Well, a major focus of Valve for a while now has been getting PC-exclusive games working well with controllers. The original Steam Controller, Steam Input, and the Deck itself are all geared towards solving that problem.
Yeah, they say it is unsupported but it is totally fine. I just used one of the community templates for the controls and it worked like a dream. Looking forward to playing the sequel later this year.
Have you done any tweaking to graphics settings? Feels like it's running a bit "hot" considering that it's not that graphically intensive.
I guess I could try just lowering the TDP too.