Straight walls slicing like Z banding

[BrainKaput]

Bambu studio is slicing perfectly straight walls in a strange way.
It creates a Z banding like artifact in the printed model.

Any ideia why this happens?

Edit: I’m printing it in arachne mode. I found that if sliced in classic this doesn’t happen at all. But no ideia why.

[user_3026326371]

Not an artefact - it is a seam…
You can change where the seam is placed, make the points random and even paint the seam line to be where it is not that visible.

[BrainKaput]

Obviously I’m not talking about the seams but about this.