Who mine with BLAKE 256?

Miner(blake256) from NEOS official website (https://github.com/Griffitsj/cgminer-saffron/releases/download/saffron-1.0/cgminer-saffron-windows.zip) only 1.46Gh with R9 290. Any idea?
cgminer.exe --blake256 -I 14 -o stratum+tcp://www.hashharder.com:9585 -u wallet -p x