I don't quite understand what you mean. can you post a pic?
if you are talking about the cutter leaving a mark on the side of the work when you contour, this is caused by flex, mostly in the tool itself. the tool gets pulled into the work when you plunge, stop, or retract. This will happen on all machines. The way you get around this is by making and arced path into the cut, or starting and ending away from the contour. Fusion should have some settings for this.
Otherwise, I'm not sure what you're asking.