Interesting problem of tuning both sides speed. Here (small Atom netbook hooked to big screen) the ball moves noticeably faster on the Flash side. To the point of making me lose a Pong match with myself.
Chrome has four different versions at any one time. Stable, beta, development, and canary. Canary is essentially a nightly build, and is buggier than a very buggy thing indeed, as you might reasonably expect.