It is subtle but the pauses are there especially in the interview at the news station about KH...
Not at all like the naked news interview except that was heavily edited so we didn't see him when the screen was blacked out when the interviewer would ask the questions so we don't know how long it really was before he responded. Regardless IMO, there is a noticeable difference in his speech pattern & mannerisms between those two when he does speak.
I'd say the cover guy & plastic surgery interviews were in between. He wasn't as animated in the cover guy but not as fast to respond in the plastic surgery.
Make sense? It is late and I'm beat so I have no idea if I'm explaining it correctly.
The difference in speech patterns could also be explained with bi-polar disorder. Speech and even thinking patterns is so different when manic compared to depressed. When on meds, compared to when off of them.