Program pausing issue

I tried to run a test line program on 1/4 steel and Mach 3 would pause at random points while cutting. The torch was still firing but the program just paused in it’s run. I ran the program with thinner sheet and it ran fine every time but then I bumped it up to 1/4 stock and lowered the feed rate to about 50 it would start randomly pausing. I cut 1/2 plate by hand with no problems with the Vipercut 30I. I don’t know if this is an issue with the feed rate being too slow or what?