toolpath is too faceted.

Hi all,

I have set my mesh setting according to this site, and set my tool tolerance to .0001, but I am still getting a faceted toolpath. I am using simple, planar curves (drawn in Rhino as splines) and using 3d Profiling. I can hear and see the mill moving in a very 'jerky' motion, not a smooth, fluid cut. Am I missing some other settings?

tx,

dh