If you look at the linsert the land on the edge of the tool is were a lot of the problems with chip breaking/bird's nest come from. The feed has to be agressive enough that the frazcture point of the material is high enough above the cutting tool (the material actually fractures instead of "cutting") that is flows past the land and into the channel that froms the curl.
The optimist says the glass is half full, the pessimist says it's half empty. The paranoid in me says somebody put a hole in it.
Remember pessimists are at heart opptomists. They know things can and will get worse.