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Please help. I captured the problem in a slow motion.https://youtu.be/jiuMoTZarLc
I have an i3 mega and i am printing petg (from Ice Filaments).
In this video retraction is 5mm. The extrusion tube is not moving (fittings are very tight). Temperature is 210 (i tried lowering but it does not change much. Coasting distance is 0,10mm. Printing speed is 25mm/s, travel is 250mm/s. Retraction speed is 60mm/s
I have tried higher retraction values up to 8/9mm. It does make things slightly better but the filament starts breaking where the stepper motor pulls/pushes it.
What else can i do ? I am starting to think i need a direct extruder.