Tracking Freezing

I need to edit a clip with a lot of movement and use the censor effect on the person's face. Obviously, I'm using FCP's mask tracking for this, but it only shows the movement for 3 or 4 frames and then freezes, and continues doing the tracking by its own, making it impossible to detect any tracking errors (which occur frequently).

My machine is a Mac Studio M2 Max, ultra fast SSD, using proxy media on viewer, and this has never happened before.