I don’t know what happen I was printing Bambu PETG-CF perfect on bambu’s presets for the first 1/4 spool and now I’m seeing the same nozzle build up and random imperfections in my prints, EVERYTIME I use it I dry it for 8-12 hours. I even tried doing all the calibrations in orca slicer, and slowing down, after I started having problems. Maybe the issue was always there and I wasn’t doing complex-long prints for the first 1/4 spool. To be fair PETG-CF really is not all that great of a material IMO, I’m having way better luck with pa/pc cf witch has way better properties for what I need. I know someone will need the PETG-CF material properties for their own reasons. From what I have seen with using generic profiles in Bambu studio that they seemed to be also spot on 90% of the time for what I have been using. Coming from Cura and Creality printers with the sonic pad, the whole Bambu eco system is just as idiot proof as you can get in 3d printting.