I am having the same issue, which just started happening yesterday. It seems like the loop is 3 minutes or less, with the MMM-PIR timer set at 60 seconds to turn off screen.
I’m not running MM automatically via pm2.
I have added “vc4.force_hotplug=1” to the end of /boot/cmdline.txt
Raspbian ver 11 bullseye
MagicMirror version 2.29.0