I did more testing and this ridge effect is on all shapes, ridges on circle start at 15mm/sec and very noticeable at 20mm/sec, ridges on squares start at 25mm/sec and more noticeable at 30mm/sec, diamonds at 20mm/sec and more at 25mm/sec.
Any help appreaicted
I have found a posting here in the forums that has the same ridge effect at Co2 laser cutting doesn't smooth
his solutions was new stepper drivers not sure that is my issues but putting it out there since it is the exact effect I am experiencing.