Couple questions about the miner then.

I see that it's working for my 6GPU rig, but how can we be sure that it's not duplicating the nonces of all instances?

Is it possible to make it more than 6GPU's on a rig?

Ex. If I started if you start 2 rigs, each on the same port, does the miner duplicate the work for these 2 rigs?

Lmk looking to purchase today