AnneVanLeyden

I found this issue still to be present, even in Cura 4.13. Switching off 'Compensate wall overlap' indeed fixed the underextrusion, by turning it into overextrusion. Using this setting on a small test print with 0.4 mm thick walls resulted in more than 50% higher filament consumption (from 0.9 m to 1.43 m) and much thicker walls with an ugly surface. What I was observing is that the print head moves clockwise to print the wall and ends up at the starting point. Instead of moving up a layer and start printing the next layer from there, it moved counterclockwise, back over the just printed perimeter and then moved up to the next layer. During this move back over the already printed perimeter, probably some material was pulled out of the print head, causing the underextrusion at the start of a new perimeter. Switching to 5.0.0 with the new Arachne engine fixed it. It didn't move back over the just printed wall, but continued to print the next layer from where the previous layer ended. This also reduced print time quite considerably (26 to 17 minutes). Sometimes less (movements) is more.