I use my steam deck docked as a Home Theater PC (HTPC) with a remote with a gyroscopic mouse and full keyboard on the back, and I love it. YouTube with ad block, jellyfin media server, and videogames
Hmm, I wasn’t able to output either just now after installing the Stremio flatpak on my SteamDeck. But I was able to get lossless 7.1 audio, which is nice. No Atmos, unfortunately.