I have two A1 Minis. Both string on more intricate prints, while my P1P does not.
One of my minis has over 350 hours of print time. The other has just 40 hours. Both string equally.
I run only Bambu PLA, and I use dry boxes to keep the filament nice and dry.
Based on the fact that both printers do the same thing, and 1 is only a few weeks old, it appears to me to be a flaw in the printers. Whether hardware or firmware I can’t tell.