I'm having this problem in third person only, where weapon swings aren't synced up. Sometimes the sound will come after the swing, sometimes the sound will play and my character won't swing, but most commonly I hear the overlap of 2-3 successive swings while in mid swing. Sometimes I left click and my character begins to swing and then stops the motion. Does anyone know why this would happen? The only animations replacers I have are for jumping,sprinting, and magic casting, and my weapon speed isn't modified at all. First person is also fine, the problem is only with 3rd person motion.

http://www.youtube.com/watch?v=dQhtOyBe2Fw&feature=youtu.be

If my description wasn't clear this is a video more or less displaying what happens.