I have some "vibrations" or weird ripples in the external perimeters and then some ugly looking layers. I am using an experimental version of Slic3r 1.2.8.

Both items printed at slicers defaults and .2mm layer height. I have calibrated the extruder and flow rate.

IMG_3079.jpg
See the weird ripples in the external perimeters, what causes those?

IMG_3080.jpg
More ripples...

IMG_3081.jpg
Layers printing fine, then ugliness...

IMG_3082.jpg
Again, layers print fine and then this.