[Strange effect with 4.5]

Thanks, I will try #2 and see what happens. The lines are quite pronounced, so painting would not hide them. I would guess that they are around 1mm high.

[Strange effect with 4.5]

I downloaded Cura 4.5 on my Mac, but all my prints now have a pattern on the surface (see the benchy). They printed perfectly with a smooth surface in 4.4.1. I was using 4.4.1 as it came without any changes, and the same with 4.5. What do I need to change to get my prints back to what they were with 4.4.1?