I noticed that my Green Bambu sample roll of Basic PLA needs drying already. I only have had the reel in my AMS for about 3 weeks. I realize some other types of filament need constant drying. But PLA. I have never had this issue with other brands of PLA. I have 3 different filament dryers and a Food dehydrator. What I love is loading 2 or 3 roles of filament in my AMS and it switches filament when one runs out. Very nice. It would be nice if bambu had a heater to further dry my filament. More convent. If nothing else. I need more testing but so far I am not liking Bambu Lab Filament. I do dry my filament but I have not had this kind of issue with my other filament. I bought 10 roles of different colors of the Bambu PETG-HS filament. So maybe that is better. Being a newer batch. OH, I find Petg prints great, perfect in my new X1C. I use mostly Thin Tree supports and SPORT mode.The bambu filament prints find if dry. Example: I printed another spool for my filament and the Green Bambu PLA printed with a lot of zits on the top surface. Then I printed the second half in Black Generic PLA I got off TEMU.com. ;same amount of time in my AMS as the Bambu green filament and it printed PERFECT.