READ ALL triple click green flag. if that does not work then watch it a few times, double clicking the flag each time, and it will get progresivly better. eventually it will be perfectly fast. the part where the red guy is beating up me (the smily face guy) is always fast but when i start beating up the red guy then it gets slow. it usaly takes three restarts to get it going smoth on full screen. this only happens if you are in full screen so if you are not in full screen then it will be fast every time.
