I see a couple things going on. Looks like chatter (Either machine or cutter flex) and Chip re-welding. I would also use climb milling but it depends on your machine also. The part you show looks like the edge was milled by profile milling not Face milling.
What kind of machine are you using? I am guessing a router with that spindle speed. Sometimes you need an air-blast to clear the chips while you are cutting.