He doesn’t usually have those pauses when he’s reading from teleprompter though, or at least it’s less noticable. His off the cuff pauses and stutters seem more natural when they happen. When he’s reading from a teleprompter and still having the same issues, it reads as if he’s having issues comprehending the words that are coming out of his mouth as he saying and expressing them, which is understandably not illustrating confidence for some people.