Hello,
The bfgminer version on your website doesn't take full advantage of the multiple gpu's on my rig. It may be caused by Windows 7 for sure.
I have double Nvidia's, one is 1080ti and other is 1050. Megahash is lower than on a single 1070 machine with Win7.
I understand it has jump pow -- however a different implementation, for example forked off from ccminer would be better tbh.