When importing the file I get an error that the girl pan is out of limits. So I went to the area from 20-24 seconds (where the behavior was way off) and checked the values in vsa vs xlights. Definitely different.
But there were about 4 instances in the vsa file in that time range where the events had a low value (in the 400's) and the VSA settings had a low limit of 500. So I hand corrected those events to 500 and imported into xlights again. The pan error no longer occurred at that point and the animation was overall smoother. There was less of a sync problem also but it was still there.
So, next I'm going to fix all out of range errors for all servos and start over with no out of range errors. Based on the limited success above I'm guessing the jerkiness will be gone.
To clarify a bit.. The girl panned to the right and stayed there for several seconds when she should have been looking forward. There are multiple evens in that time period so they are all incorrect.