Hi! Im glad you enjoyed the game ^^ I understand why you might think the controls lag, but this is actually an intended feature :P The ship moves with the rythm of the heartbeat. Every heartbeat your ship will propel towards the direction you're facing. Which gives you limited mobility. You need to grind along the edges of the level to increase you speed. We realized a tutorial would have been very useful to explain this somewhat unconventional mechanic :P