Sorry this is a repeat of an earlier topic (which I could not find). However, this describes the hiccup better:
When I use two keyframes I get smooth motion. More than two I get problems, a little hiccup in the middle ones.
Two: start slow, end fast. Fine.
Three: Start slow, linear, end fast. As it approaches the middle keyframe its speed slows/speeds or the implied bezier position curve through that spot is not consistent.
Same prob if all keyframes are linear, or smooth, or whatever. The hiccup is there.
Any ideas / workaround? I did try doing each frame at a time for a short sequence. Still not good.
(Anyway to view /adjust the motion path?. like Vegas 4. Answer. NO.)