Hi Gr5,
I have tried both in the same printing (Tune>Speed>50%&outer wall wipe distance=0) and the result isn't good. I thing outer wall wipe distance affects at the end of the outer line but in my case the problem happens on the begening of the outer wall and the nozzles drags the over extruded material so now I think the problem is over extrusion as you said. I'm attaching the project, I thing the artifacts take place on the layer 18,20,26 on the right side of the benchy and 14,15,16,17,19,21,23,24 on the other side
Test_6_Outer_wall_Wipe_0.curaproject.3mf