Yeah, I had many games on GOG, still have, and after I did full switch to linux using Proton is such great experience. I have Steam Deck too and it's just more convenient to get stuff on Steam, sadly. I've already finished Cyberpunk 2077 on Windows two years ago and I've recently wanted to play Phantom Liberty DLC. I've tried to install it through Heroic, Bottles and directly through Steam and experience to setup GOG Galaxy to maintain cloud saves and achievements is frustrating at best, but I've also noticed some lags and micro-stutters when using GOG client.