I am having problems with my Bambu P1P under extruding PETG with the factory settings for PETG. The under extrusions appear to only be by the walls of the print. I have changed nozzles, PTFE tube, and cleaned out the extruder. What are some other steps I should try to get my printer working like my P1S? (I also run the AMS)
Did you calibrate the filament?
Do you have a pic of an example?