I don't know if it's going to help anyone, but everytime, when I play this game with the windos media player working, I don't get ANY lag.
It is not a coincidence because as soon as I close the media player the lag gets back.
Hope it helps.
To Pedro7Latro
That also happened to me on Lick Up The Honey
You don't get perfect because you let go of the number keys (1,2,3,4) before they reach the end, so the game counts it as a missed keyAnd very nice game by the way 5/5
The only problem I see is lag, but it's not a problem with the game
 "Ancient Origins{flying fish}"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 3"){kind=icon}