@Sebastian-Roth This is exactly what it was. I feel a little embarrassed haha. Thank you for your help

so to clarify, I am imaging 6 groups of computers, with each group having about 36 computers. Each group I register to fog, then when it asks if I want to image now I select no. I then create a group in fog, move the 36 computers that were just registered to that new group, schedule the task, then turn the 36 computers on. They then go through the process of getting to the multicast group but about 10-12 of them start almost immedialy, and the rest are put in a que for singlecast.

Its interesting because the rest obviously see that they were scheduled to be imaged with the rest of the group, but somehow end up in singlecast.

@Sebastian-Roth You mean just try the same thing, but with a newly created group? I have not tried to create a new group and reimage the same computers, but each time image a group of computers I create a new group for those computers. I see the same thing happen with each group.

I am running version 1.5.5 and each time I create a multicast group and schedule a task for those computers (36+/-) fog starts to image the first dozen or so without waiting for the others. The rest end up in a que and I end up forcing them to start. They then image in singlecast. I have extended the UDPMAXWAIT to 1000 but there is no change. I can’t find anything on this issue and I am not sure what logs to look at. Any help is appresciated.