I suddenly remembered now had posted and went back to a old post on a different forum and dug up this old post.

This is quite a frequent problem with my Cura and happens quite often.
when any change happens on Z-Axis, could be many changes to the shape of the model, the outcome is always the same style texture surface change.

Look at this example Black is Cura Blue is Prusa Slicer 2.3.0
Right Lead-Screw comparison.jpg

Looking you cannot believe the differences a slicer can make.