You are using adaptive clearing which is great for rough-cutting large amounts of material but definitely ain't no finishing cut! The "optimal load" is also set to 2.4mm, which translates as a large stepover for something like this. All this is ok to remove the bulk of the waste but you need to finish with an appropriate cutting strategy. Possibly one of the 3D strategies but I'm not in front of a screen at the moment. You will also do better with a ball-end mill rather than flat, although if you make your cuts at 90deg to what you did for roughing and with a small stepover you would get better results especially with those relatively flat curves. Good luck - this business is a continuous voyage of discovery!