what are the cards on the rig? remember "Dual mine" is .. mine Eth near full capacity and slip an alternate algorithm on the card to use spare cycles. ex. My 4x470 rig should do around 100Mhash/s and can tack on about 1300Mhash in SiaCoin. Sia alone i'm able to produce around 3800. There's flags you can set to choose each coin's "intensity" and algorithm, but its Ether first on Claymore.