Looks like your running El Cap 10.11.6. Cuda 8.0.57 should work with that OS. The Cuda control panel says an update is available. On Sierra that message doesn't appear?
Have you installed and tried to run CudaZ?
Tried it all and I actually had to reinstall the operating system for other reasons but even with a clean install same results. But what I found out is that the f.king Adobe its a bitch. when you need to render your protect you can send it to Media encoder and then it will do give you the option to use the GPU. Still suck that you can use the GPU for preview while you're editing