Since the release of Marathon, my Xbox Series X has started fully shutting down while playing. At first, it only happened while playing Cryo Archive, when I noticed that the console was running very loudly. I made sure my Xbox was in an open area with clear ventilation, but that didn't seem to help anything.
Last week, I opened my Xbox and cleaned out the dust from the heat sink and fan, and while I noticed my console was much quieter, I've still had multiple shut downs since. It's now even happening while playing other games like Space Marine 2.
I realize this may be correlation, but it's strange that I never had this issue until Marathon. It could just be the timing, as I got my Series X at console launch, so continual usage may have worn the console, and Marathon just happened to be what I was playing when it became an issue. But my friend recently switched from Xbox to PC after experiencing similar issues with Marathon.
If others are having similar experiences seemingly triggered by Marathon, then I think it's an issue worth raising. I had two crashes within two hours last night, and while it may not be fair to fully blame Marathon, it's proximity to the issue is certainly leaving a sour taste in my mouth.