I don't see too much wrong in your approach, at least from the angle your camera
is. You didn't fall off in the video I and your pacing looks fairly good, I didn't notice a severe stutter step, at least not a pause step, your steps do get progressively shorter and faster which is causing some of the problems you are having.
The main issue I see is your swing looks a little forced and cut off (symptom), work on letting the ball drop into the swing, and use the momentum of the ball dropping into the swing to propel the ball into the back swing and let the ball swing back as far as it wants, and feel the zero gravity point at the top of the back swing. Late timing is the culprit here, I can't see how you are starting the ball into the swing, but the ball should be swinging faster than it is. The slow swing is delaying your swing and forcing you to pull it back before it gets to the top, that combined with the speedy quick feet = cut off swing.
Speeding up the swing by letting the ball drop into the swing without you catching it or slowing it down in any way. If you are grabbing the ball just after the pushaway, this will kill the momentum of the swing (again I can't see if you are doing this or not). Taking longer/normal length steps on steps two and three will give you more time to let the swing get to the top of the back swing.