Running Gnome 3 or something else?

If you haven’t already the first thing I’d do is run an entirely different window manager for an hour or so to see if the problem persists. That would at least rule out whatever your DE is. Preferably to something really simple like fluxbox.

If the problem persists then it’s probably hardware and maybe increasing kernel log levels would show interesting information.

What’s the CPU? I’ve seen this type of random bottlenecking on early Ryzen chipsets.

Alternatively have you tried following journalctl until a freeze happens to see if there’s anything interesting being logged? If you’re running Gnome it could also be an extension acting awry.

Problematic seems like a bit of an exaggeration, but it’s definitely a show to highlight the 5 AAA games that came out this year.

I do love how the “labor of love” and “best ongoing games” categories actually just mean “games the developers shat out unfinished then finally bothered to patch.”

But yeah it’s a show for trailers aimed at normal people who only played Spider Man and Tears of the Kingdom all year.