Print layer shift effect with no layer shift

I have a weird problem and I would really love to get some help with. Every time I have a print that has a top surface and then walls continuing above the top surface (See the pictures), I get some weird layer shifting like a line that is protruding out of the walls at the same height of the top layer. Does anyone know how to fix that? Would appreciate any help you can give. Some printer details: VC4 300 hybrid no enclosure, PLA (black esun epla-st, green creality hyper Pla) 0.2/0.25 mm layer height, 3/6 walls, 25/30 adaptive cubic infill. Using Orca slicer 2.2.0 Thanks!
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2 Replies
kakapo
kakapo2w ago
the black part has the same issue asd the "benchy line" where pressure or something builds up after a solid layer and will be visible in all walls. idk how it works exactly; but reducing wall could help ive heared. then the pressure can be reliefed in the infil i think. dont take my word for it though. to some extend this phenomenon is normal; but yours is rather extreme. please check your flowrate and rotation distance
Anton
Anton2w ago
Gantry bending(known issue)?

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