Thanks for the compliment! We do have some hacky code that gets chrome to work, but we're not sure why we need it. Googling around you don't hear other people facing the problems we are.

We built http://lazeroids.com in 48 hours for the http://railsrumble.com/ programming contest. Since we didn't have a lot of time, we didn't get to much performance optimization. There's a ton of low hanging fruit in that area that we'll deploy after the contest voting ends on Sunday. (You can't make changes during the contest, only during the 48 hour weekend competition).