The in-game camera is absolute garbage. I have no idea why they can't just use the same camera/zoom features as the gallery.
It's so hard to tell which piece is which in this game, and the camera controls makes it that much worse trying to figure out the overall game state. I'm pretty good at chess, but not when I can't see what the hell is going on. Turning on 2D mode just disables the whole point of the game: the animations.
Also, my GPU fan is constantly running with this game, and I have a pretty good video card.