I'm a slow scroller too but that is the way I like to do it. I'm enjoying fretwork at the moment and there isn't much speed to be had there. I'd be breaking tons of blades if I were to rush it . I tend to use thicker wood so that also slows me down. I just put on a good audiobook, pop my earphones on, and forget about time. To each there own I say. If you want to increase your speed, then work towards that. It's all about your personal preference. Just be sure to enjoy it!