The component I am working on has an overall profile tolerance of .005 to the entire model. There are dozens of small internal corners, all normal 90 deg arcs. Most of these arcs are falling out of tolerance on the .005 profile. I am already using a smaller endmill than the radius size of the arcs to reduce tool contact, and running modest feed rates and spring passes.  I was recommended by a programming consultant to try turning on my machine's high speed look ahead funtions (Matsuura