I can confirm that it does jerk and it seems be either a decimation problem (due to plugin miscalculation) or a source problem (it being hybrid with pans at 30).
Unfortunately I don't have the source verify whether it's hybrid or not, but I suspect it is.
Edit: Upon a closer look on the ep via directshowsource(), take 3:21 as a reference on ep 7, the frame pattern shows bad decimation as you do frame-stepping! Oh boy :/