Most likely causestemperature, retraction, travel speed, and filament dryness.
Printer focusCreality printers cover Ender, K1, CR, and many entry-to-advanced machines that often use Cura, Creality Print, or Orca Slicer.
Slicer checkReview Orca Slicer, Cura, Bambu Studio, PrusaSlicer, or the slicer profile used for this printer before changing mechanical parts.