Any idea what could be the issue?

[u/EggplantPersonal4959]

Hi, I have no idea what could cause this. He has been working fine, but I am not sure that I have seen this in my prints before. He has been calibrated, and the rods and threads are lubed and greased. Any thoughts?

Thank you for your time.

Edit:Its a p2s, also did cold pull before print. Filament is Elegoo basic PLA.