Both of these are issues which are adressed for v0.15.
In v0.15 the hitnotes follow a strict pattern on the x-axis which makes tracking notes easier (left to right - most left is the next note which loops back right to left - most right is the last one) + the time windows periods are doubled for each single note.
I am using the Stockfish Chess Engine and for the next update the AI depth is lowered on 0 (now it's 1).
Sorry that you had a bad time, I will try my best to do better in the future.