When I am doing the usual first slash Flourish thing in LD, I notice that I often continue to dash on even though I pressed the attack button (players who play often against me should notice this). This causes me to lose valuable hits I can do to the other players. Is this a lag problem or is it I just didn't press the attack button hard enough?
Actually, it sounds like you are not releasing the boost button soon enough. It could be that combined with lag, but the button release sounds to be the most likely reason.
~Gwen