I run 6 x Vortechs off of my module and have all of them running as Profilux controlled. The feed pause works great in this configuration. You could always create your pump schedule to flip into Profilux controlled mode during the approximate window you think you will be doing a feed, this way they will stop/slow down when you activate your feed pause. Simply schedule an hour or so around the feeding time where the pumps would change from one of the Vortech modes to Profilux controlled, then back again.

Its kind of convoluted, but it would work.

G.