It causes a bunch of weird controller errors, such as when a controller disconnects (or if the deck goes to sleep), it can’t reconnect again.
Just let it use the default version (which I believe should be Proton Hotfix, or whatever Valve decides it should be since BG3 is an AAA headliner, they’ll want this to work)
I literally doubled my decks weight with a 15000Ma brick attached to the DeckMate system. Now I gotta be resing my arms on my knees or a pillow but I can chill for 4 or 5hrs in game. Also, I gotta be careful about covering the inlet in that position, or I’m playing a slideshow for 2min while the Deck cools.