I have made this game so that the player, Bubble, moves very slowly. This is a game where you have to carefully and cautiously carry the bubble to the goal, because as soon as you carelessly do so, the bubbles will go off the screen and go somewhere else. So if you felt this was sluggish, that may have been the normal motion of this game.
It's hard to pinpoint the actual cause, but whatever it is, thank you for playing and for your repeated comments/informations. :)