Hasta La Motion!

I posted a few questions about a shooting waterfall and have since figured a lot out, especially in Maya, getting the particles radius to decrease over time when the fountain starts to fall, however I’m getting the particles to separate on the way down by using a noise field animated over time when they fall. It’s works very nice by using velocity instead of force, but the particles seem to stop falling for a second when they separate then fall like they should. Any reason for this?
This is my last little hurdle with this thing.
Thanks a bunch.
I can post a vid of what they are doing if needed.