I'll lay it out in steps so I can organize how I've experienced the problems as a process:
1. Booted from Windows into Bazzite only to find, in Gaming Mode, there's no audio. My audio device is set to the HDMI/DP output so that's proper. I went into desktop mode after checking.
2. Every time I try to go back to gaming mode, it reverts back to desktop mode and I'm signed out of Steam. Tried three times.
3. Updated Bazzite in desktop mode, rebooted. It loaded into Windows. Suddenly my monitor screens are all like 20% darker, in both Windows and Bazzite. Brightness is maxed on both though.
4. Initiate switch to Bazzite from the batch file I like to use (sidenote: sometimes it loops back to Windows and then I try again and it goes to Steam gaming mode on Bazzite).
5. Audio still doesn't work. Also HDR is enabled for some reason even though I turned it off.
6. Turn HDR off, suddenly colors are all messed up and chaotic, hard to make out what I'm looking at.
7. Repeat from step 2.
I don't know if I need to post anything here like a log or something, so let me know if I do.