Original BBL filament was taped the end of the filament to the spool, effectively not only preventing the runout sensor from working but also clogging and hence destroying it. I only hope that they no longer are selling those batches.
I never encountered such issues with off-brand filament.
… come to think of it… have you tried slowing down the toolhead? sometimes the rheology of the 4rd party filament is a bit off… slowing the extruder down might help… sure, the prints will take longer and you’ll have a slightly bigger carbon footprint but that is the price of using non-BBL filament, isn’t it?
I use Generic PLA settings for Filamentum Extrafil and the results have been virtually perfect with several multi-color prints.
This was the best filament made before Bambu, Creality Hyper PLA and eSun PLA Plus were released.