I just got my machine up and running today on Mach 3 demo. Most of the time it seems to run fine, but periodically it will pause for a half second or so while running. It never happens in the same spot, and I am definitely not near the acceleration or speed limits of my steppers to make them lose steps. The program just pauses for a bit (along with the DRO's), then resumes. No lost steps measured.
Any ideas?