I know this topic is over 20 days old, but I figured I should reply since I just got my PEO plate yesterday, and used this as a point of reference.
I have now printed 3 times on my P1S with Bambu PLA Matte (3 different colors), did not change from the default 55*C plate temp, and kept the plate in Bambu Studio as “Textured PEI Plate”. No issues with adhesion at all. All prints removed easily once the plate was cooled.