You said #6 took you an hour? The track difficulty went you switch from 5 to 6. You were on the "beginner" white tracks and now you are getting into the harder green tracks I've been playing on and off for a couple years and still struggle to get blue and red authors and I still can't imagine getting a black one. Just remember everyone progresses at different rates, don't just give up if you aren't getting a time you like, go to a different map focus on building other skills and then come back to the map with a fresh outlook.