I have a GeForce 975 and a Ge Force 1080 running in my Alienware Graphics Amplifier.  The GeForce control panel shows both being recognized as options.  But every time I start aces high 3 and go to the graphics control page it only gives me the option to use the GeForce 975.  Any experience with this problem?  On my laptop I could always choose on option 2 to force the use of my higher end graphics card.  But on this new computer it has a CUDA GPU.  I am at a loss, and I really want to be able to run my Oculus Rift.  Any help or experience would be awesome.
Nomad