Are the settings you set to .0001 the Rhino mesh settings? If the mesh settings are to rough, curves will be jagged although not an xy square you discribe.
Set mesh to custom, minimum edge length to .0001,maximum distance edge to surface to .001 and your cutter description to .001 you should get a very smooth curve.
If this does not work it obviously it is something else.
Regards,
Dave |