I currently am running with two GeForce GTX 670 SuperClocked 4096MB GDDR5 Graphics Cards in SLI. I've set the primary card for Medium render priority to give me GUI functionality.
In the on-line manual I read this: If you are running a GTX 690, or multiple graphics cards, it is important to disable SLI in the Nvidia control panel.
Why is it important to disable SLI?
i7 6800K (6 core), 24 GB, GTX 1080 8gb, Titan X 12gb