I have this weird problem with my brand new Anycubic Mega S. First of all I use the default "Normal 0.2" setting in Ultimaker Cura 4.8 and I am trying to print this *MICRO* All In One 3D printer test. The printer has the Marlin stock firmware.
The problem is that when it starts the print, the filament barely exits the nozzle. The small amount that does actually leave the nozzle clogs up immediately and starts sticking to the nozzle.
The funny thing is that when I hit the "Filament in" button in the "Tools" section, the filament comes out totally fine, so I think it can't be related to a dirty nozzle. Also because it's brand new.