I optiminer miner does not work, 2 cards do not want to engage in mining that can be 
With optiminer there's always a card hanging and I don't want to babysit rigs. CM 11.1 no problems!
yes yes, but optiminer 1850 s / s - 5 cards Claymore 1730 s / s
Wait a bit, today or tomorrow will be new update, and again speed will be more than optiminer.
how sure are you on the speed increase