Ender 3 under extrusion after travel/when printing infill : r/FixMyPrint
Creality Ender 3 V2 - Solving Under-extrusion To Save You Hours - YouTube
Strange under extrusion issue : r/Creality
Underextrusion at a seam on ender 3. Tried changing retraction from 0 to 6.5 but nothing changed. Also tried 2 different filaments. Any help would be appreciated. : r/FixMyPrint
Ender 3 underextrusion - 3D Printing Stack Exchange