Has anyone used the Titan X with Pro 2014.5.xxx? I just installed it and my FPS is the same in CPU mode as it is in hybrid mode, and the GPU mode does not give me any real time raytrace (just preview). Does the Titan X not work?

I was using a GTX 770 before, but every time I had Light Studio open and tried to save something in BS the program (BS, not Light Studio) would crash. So I thought I'd try the Titan to see if it fixed the issue. It did not. Would a 780 give me a better chance of no crashes than my 770? Seems like some people have been using the 780 with Pro....