My ender 3 v2 extruder is crushing the filament and snaps thus the printer fails to print. I have adjusted the extruder tension, nothing has changed. I also upgraded to a 0.6 hardend steel nozzle and I checked if it was the nozzles temperature, that made no difference.
The stock creality extruders are pretty trash. They have a tendency to not grip the filament well enough, or alternatively, grind the shit out of it leading to slippage.
My first upgrade on those machines is always a dual gear extruder. There should be a drop-in replacement for <$20 on Amazon. They’re almost always coated in red paint, should make it easy to find :p