I'm not sure that I understand the question. I'm a drummer; I don't count 'notes', I count the tempo. If I need to play something fast, when I'm learning it, I play it slowly. Once I've mastered it slowly, I'll increase the tempo, little by little (over a couple of weeks, for instance...) until I can play it at, or slightly faster, than the target tempo. By that time, there's no 'counting' involved, as it's ingrained. The secret to playing anything fast is to play it slowly. Does this help..?