Fellow VO here and person who stutters; it's very interesting how I get a script, do my analysis, and when I add a bumper word and hit record, there is no stutter. Cold reads are my nemesis, but when I'm in my studio, I have my script and hit the record button. Some switch turns on in my head, and there's no stutter. I also have my video off which they don't particularly like but its my process.