I've been often accused of talking too quickly, and recently it has become a problem in my French orals and in Debating. It also becomes a bit of an issue when I suggest something in class, especially something in my philosophy class, or deliver an explanation of my thinking, and no one actually knows what I just said. Usually the teacher will then restate what I just said in a more concise manner.
Possibly related to me not being able to be concise at all.
So, yes, the question is: Is it Type Related?