Can it be that imported PNG are better deformed with the Deforations skeleton?
By better I mean cleaner, finer. All my experiments with for example a surface plane were not satisfactory. I’ve had better experiences with PNGs.
Only my impression? Or ignorance? Or are there any secret settings? The horizontal and vertical subdivisions do not seem to bring so much.
Greetz from Earth 
Editing: I now mine in the case when the object is a single track. Like a wooden beam, for example.