> I am now using KDE as the desktop environment for my gaming rig

Any particular benefits for gaming? Wouldn't it make more sense to use whatever SteamOS and derivatives use? I'm guessing for gaming you'll want a launcher app, wine/proton config and troubleshooter apps, chat apps, apps with game controller support, and the like?

I explained more details in the previous blog post (https://kokada.dev/blog/from-gaming-rig-to-personal-computer...), but my current setup replicates a SteamOS experience in NixOS using the Jovian-NixOS project. So basically the same thing, the system boots in gaming mode by default and I can switch to the KDE based desktop by select "Switch to Desktop" in Steam's Big Picture mode.

So no, I am not using KDE for gaming itself (keep in mind that it is possible, the games runs well under KDE too), I am using KDE in my gaming rig (that is, my desktop that is focused in gaming), but for gaming itself I generally use Steam's Big Picture mode.