Wait, are you saying you have to run scripts to make hdmi default… on Steam Deck? Cause I have the thing in desktop mode, and every time I turn it on while it’s plugged into my tv, it automatically defaults to that tv no problem. What’s going on with your setup?

Also wireless latency is a problem everywhere, with some controllers being better than others. Gulikit ES Pro works pretty well in my experience, but wired is always going to be faster.