I am printing 3DLabprint RC-Planes. The Airframe consists of one outer shell and an internal structure. I rrealized irregular bumps on the outer shell at a positions where also internal structure exists.. Firts I thougt the internal structure comes thru. But after closer observation I realised that at the bumps a short speed drop happens. I think due to the speed drop to much Filament flows out of the nozzle because of the higher pressure inside the nozzle from faster print Speed before. - Cura 2.6.2 - Rumba Board. - There in no G1 Fxxx comand in the gcode with a reduced print speed. Any idea what this speed drop could cause?