SuperBall parented to character has no lag?

I was making a game with Roblox's SuperBall tool, and I noticed that if I make the parent of the ball the player's character (instead of workspace) it doesn't create any lag that would be normally found if it was parented to anything else. The lag comes when I fire the ball - it freezes in air for a bit of time before firing off normally. When I parent it to the character, this doesn't happen. Does anyone know why that is?