Do you mean "before" you tried to slow down the motion? If so, this isn't surprising, since this is "before" Vegas had to mess with it to get it down to speed.
"What's PATA and SATA with hard drives? "
PATA is the old "Parallel" hard drive connector, the super-wide, skinny connector.
SATA is the new "Serial" hard drive connector, whose connector is a fraction of the size.
SATA drives are faster on paper, but not by a whole lot more in real life. The best thing I can say about them is that stores have dropped prices on the older PATA drives as a result, which is fine by me.
(I just happened to get a good price on the few SATA drives I do have, and one was donated for the X0 Project.)