Massive slow performance from 900 GH/s to 37 MH/s

[smozy92]

You should probably start by using a version of hashcat that isnt 4 years old. After you update to a more recent version of hashcat and retest, make sure that whatever command you are running doesn't include --force. Once you've got both of those figured out, then you can worry about adding more work or restructuring your attack to achieve a proper workload and better speeds.

Thanks for the reply chickenman.

I used a 60GB wordlist combined with d3ad0ne rules and got 200 GH/s which is way way way faster than the 37 MH/s with the simple wordlist without rules. Do you have any explanation on why it gets faster with rules, that puzzles me.

However, 200 GH/s is still not the 900 GH/s expected by the benchmark (even if I know that the benchmark runs with the best conditions and optimisation ...), what can I do to increase the speed again ?