Shaps, that's not the best algo. The cryptoasm_x64 is the best algo. You're using either the C miner or 4Way.
d3m0n1q_733rz, when I check --help, the only options for algo are c, 4way, via, cryptopp, cryptopp_asm32 (and auto). If you try to specify "cryptoasm_x64" you get an "Unknown algorithm" error. Am I missing something?