When I associate several bundle groups to a PC at the same time, the bundles are all launching together. Only one of the installers can run at a time, the others fail. Is there a way to prevent the installers from kicking off at once?

The bundles are different flavors of CAD software. I have a delay set into the the main bundles themselves so that the installer should have time to finish before going onto the next action/bundle. I can see the delay is working on the apps.