note when I recoded it I made sure to make sure it performs fast. As you'll notice with large combinations (like 10,000,000 mine will perform around 5 times faster than moderate's solution on chrome on my computer).
Is the benchmark available somewhere ? Which line(s) make it faster/slower ?
EDIT: Nevermind, I see you just did a setTimeout(asyncBitcoinAddressCheck, 0). I guess you didn't see the default timeout at my code is 100 ms ? That's what make it not kill the browser.