Square-ish Vase with frills

A vase. Print in Vase Mode. Simplify3D slices this up poorly for me putting banding in by making some lines not as smooth as they should be, maybe my model is sloppy; maybe Designspark Mechanical isn't good for making vases. Idk, I can't see the problems in the model until it's put to G-Code.

The shorter "bowl" version doesn't show banding. Maybe an STL export problem. Attaching RSDOC file.