Upgraded to DRV8825 controllers. Worse print quality?

http://ift.tt/29D1R9F doubled my motor steps, and had to bring down travel speed a bit due to some stuttering issues when printing.Left is the old A4988s, right is the new DRV8825. As you can, every ~1in or so, there are some weird artifacts.Any ideas? SmartRapCore(CoreXY) w/ auto-bed-leveling, E3D Lite6, MK2 heated bed. http://ift.tt/29BMZIl