I would encourage you to speak at the rate you like to speak at. Pacing or pausing can be real issues for people who stutter, but I wouldn't suggesting changing your rate if the point of that is to stutter less. I'd encourage you to speak how you want in spite of your stutter and not jump through hoops to try to assuage it. Instead it could be better to work on giving yourself permission to stuff and feel uncomfortable. It's all OK.