UPDATE: This issue has been resolved. The root cause is that PrusaSlicer 2.4.2 generated bad gcode (G1 F0) for some unknown reason. Will post a bug report on that project. Leaving this up for anyone else who may experience this issue.
Lately my printer has been pausing at some random points. This time I managed to isolate the problem to when the part cooling fan comes on, starting from the second layer. Was hoping the experts here can help me understand what's going on.
M122 output:
Found a few other threads with similar issues, but no resolution as well.