Has anyone managed to get this to work like the demo videos ? I find it invariably misses the first beat of the bar (some kind of latency ?).. In the key if C Maj it notates an F as an E#… and if I just play a simple scale with one note to each beat, it misses out some of the notes…I have a good quality Bechstein piano which is perfectly in tune, and a fairly new iPad Pro… So far , for me, it has been completely useless.