absolutely the clue is the repeated halo dash cam active message that usually

means the camera is effectively what's likely happening the fuse you tapped is

on a circuit that experiences voltage dips or interruptions in hybrids

especially BMWs with regenerative braking and stop-start logic some

accessory circuits can momentarily sag or switch modes when the engine start

stops regen kicks in the dc-dc converter changes state or the car

enters energy saving mode at low speed even though the 12 volt system remains

on some few circuits are not electrically stable enough for sensitive

USB electronics like dash cams or Raspberry Pis a different fuse point is

probably the first thing I'd try good candidates are usually cigarette lighter

12 volt socket rear accessory socket infotainment radio powered seat or

another terminal switch

15 ignition switch supply avoid energy management modules smart charging

circuits eco-related modules or anything already behaving oddly in BMWs

some fuses are wakes sleep managed very aggressively by the body control module

the power bank idea can also work very well but