The more GPU's in the rig, the more decreasing speed. Even with good CPU and enough Ram+Swap. Other miner it works perfect with even higher speed now. So its clearly an issue of BMiner.
But i have proofs from other guy, who have 7x1070ti rig with just 4GB(!) of RAM and he have 5 gps per card easily
You have not so bad results compared to mine:)
I think there possible can be problem in the mixing of cards i.e. 1070ti with 1080 and etc.
Can Bminer devs say something?
Thanks