XNABreakout example from book has slow input [SOLVED]

So I've built the Breakout example from John's book, and everything seems to work fine except for the keyboard input. My "player" moves left or right when I input using the keyboard, but it moves really really slow. I've downloaded the sample code from John's website, and his Breakout doesn't seem to have this problem. I've also looked at his level data and mine, and I can't see any difference between his component settings and mine. Any ideas?