It does seem visually to be dragging a bit behind the cursor, though I'm unsure by watching the video how it felt while playing. I will say I did get more proficient with time, and I love a game with a difficulty curve, don't get me wrong. I did finish the game with perseverance. My hope is merely that any difficulty your players face is the difficulty that was intended, if that makes sense.
If I didn't mention before, the soundtrack was also awesome btw.