Is it possible that the lathe is running in exact stop mode? This might create a small dwell mark for each command.
One good feature of the Galil motion card I used in one lathe retrofit, is the ability to load an entire sequence into the command buffer and execute it with zero delay between commands. This seemed to be the secret to a blended appearance on a flexible part.
Or maybe there is a parameter for "in position check" that you could temporarily modify for this job.
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)