I was printing parts very well and they got worse. Mostly I saw dimples on the outside of my parts. I finally traced back to the version of Cura that gave me good prints and past which I could not get good prints. Cura version 4.1.2 beta is the last version that gives me good prints. As I look at the routing of versions past 4.1.2, I often get travels with multiple retractions from the same point on the outer surface. The confluence of these points leaves a dimple. The dimple turns into a vertical depression. This does not happen with every part, but it happens with a lot of them.