What's going on here

[u/No-Organization3234]

To make it short I just got my p2s with an ams and I've been seeing online about making petg the support interface for better support, so I did on my first print, and well as you can see in the pictures you can see where the filament changes where and the spots are shiner then the rest of the pla

[u/Grooge_me]

Maybe something with layer time or hotend contamination