I added some instrumentation and it was doing around 3.3 million hashes per second. Mine isn't sequential, it's generating random strings. Changing from a 64 byte string to a 26 byte string with (14 character nonce) brought it up to around 6 MH/s.

Given the nonces you provided, I guess you're going sequential and you're hashing 2-3 times faster than me. I just got a 7 0 hash in 70 seconds and an 8 0 hash in 164 seconds. You're right and I was overestimating how long I waited around last night.