I have experienced some long rounding showing in control nesting. I am not sure that this might be the reason but sometimes I get no response from CN. Shop Bot and Cn show difference in number rounding when loading the same job. I don't really want to experiment but I will try and load in on some of the older versions of CN just to see if there's something happening.
One machine nested fine the other stop responding. I think 30 min is enough time for it to do the job. Done on CN 5.57. Don't know what the difference between the two is but the one that wouldn't do it freezes after the final sheet is written on Nesting progress. Have no clue