I'm playing with the Steam version, with Proton Experimental and these settings: https://steamdeckhq.com/news/baldurs-gate-3-on-steam-deck-first-impressions/

Beforehand I used CryoUtilities too: https://github.com/CryoByte33/steam-deck-utilities

The only tweaks to those are: I didn't apply the SteamOS setting cause I'm not trying to limit battery usage, and I enabled TAA as the antialisiasing method.

You can use the same Stremio account on multiple devices but Real Debrid will warn you and then ban you if you use them simultaneously with different public ip addresses.