We have just fixed a bug in the
https://satoshicircle.com/ game that was causing zero amount bets to make the game freeze. We also know why it takes so long for people to enter the page for the first time and will fix that.
Good to hear that you are actively looking into and fixing these issues. Fingers crossed that you'll manage to solve all these glitches soon, as a site gets popular the maintainability gets more and more difficult. Jmeter may be your friend here if you can get together enough test servers to simulate the live traffic =)