Feed optimization in fusion 360 is primitive, clunky and borderline useless.
The big issues are:
1) The only interior corners checkbox isn't useful because it will still do exterior corners depending on reduced feed radius. I've found reduced feed radius overrides only interior corners to any corner that is smaller than defined.
2) If you bite the bullet and raise reduced feed radius and force the feed optimization to go around all corners smaller than defined, it slows down on exterior corners and has caused overcut. On exterior corners it needs to increase federate.
3) When compensation type in control is checked it disables Maximum Directional Change and the only way to optimize interior corners is to raise the reduced feed radius to larger than the radius of the arc. But that leads to Issue 1 and 2
I use cutter comp on every contour and have to hold tight tolerances on internal and external profiles. I know there is linearization of contours and all, but feed optimization needs to be based on a ratio of tool cutter radius and the radius of the profile it is cutting. Increasing feed on exterior radii and decreasing feed on internal radii.
