Displayport on EVGA GTX 950

My build follows the CustoMac Pro specs and the install was pretty straightforward with some minor hiccups. My EVGA GTX 950 is producing >100 FPS on GPU benchmarks, which is great. However, the DisplayPort outputs on the card seem effectively dead.

Some additional details:

• My Thunderbolt displays are using a mDP-to-DP connector
• The NVidia web driver consistently comes up unchecked in the menu bar on reboots. But system info still recognizes the card and VRAM regardless of...

Displayport on EVGA GTX 950