

Might be this?
Very cool! Thanks for sharing.
Just a thought on random write: If you are using swap/page files, it may have more of an impact. Or if you are updating the system in place.
I have no clue whether updating by flashing a new system image would be treated as sequential or extracted randomly as individual files.
Hard disagree.
Honestly, my bigger gripe with the video is the little dots of hot glue. That feels like wouldn’t hold up (I’ve had cats disassemble store bought scratchers). I’d brush on flour paste or thinned down school glue for non-toxic full coverage. You could even mix in cat nip to encourage use.
Something is stopping the extruder from extruding and the “fraying” is just little oozes of filament catching on the layers below.
It could be mechanical, but if it is always at the same exact layer it is may be something to do with the geometry and the slicer.
Make sure you have thin wall detection on, so it will fully print walls that are narrower than the extrusion width.
Turning retractions off might help. I’ve never worked with LW-PLA but it could be that those internal pillars getting farther from the shell are causing a retraction that jams the extruder.
Others mentioned feed, make sure your spool is not catching on the spindle. I had this issue with a roll of TPU that was too wide and it kept getting pinned when I closed the filament door. It would print fine until the tension was too much for the extruder. Then it would look exactly like this.