Can't you see that the "problem" has NOTHING to do with "stuttering"? It is just the animation of the horse walking. It does a little skip to simulate what happens when you walk with an horse (if you would ever have done that you would know it).
Please don't use wrong terms to describe things or elsewhere the devs will never comprehend what the hell you are talking about. I wondered what this "horse stutter" was and now I understand what you people mean and it has nothing to do with stuttering.
It is just the animation. You can like it or not, but it is actually pretty realistic in fact (an horse while walking moves that way and gives that impression to you while it moves; in fact I was impressed when I first saw that walking horse animation because it seems very real).
Now people even ask to "fix" things that aren't broken. Please, there are a LOT of real problems to fix, as the LOD, POP-INS and broken quests, let's not mix in there these absurdities, thanks.