Hi guys and girls!
Had the same problem!!! Found out the one Bambulab Matte filament does not have the proper diameter. The filament in question does have a diameter of 1.82mm not usual 1.75mm. I’ve tried with many other filament brands without any printing problem! Found out that the diameter of the filament is unregular in size throughout the whole roll! That is why my printing was stopping, kinda, mid print!
Hope this helps? Now I always mesure the filament thickness, at lease before print and if the problem reoccurs I will mesure it right away, just to confirm my theory!