For some strange reason, I can't get these drivers to drive both of my Displayport monitors at the same time. The previous release worked fine. I even tried uninstalled completely and reinstalling the drivers to no avail. Hmmm....
Update: N/M, the drivers work fine driving the displays now via DP. Something really quirky happened on my system, and now everything works again. Nothing a fresh reinstall of Windows 10 Pro couldn't fix, which I'm glad I did anyway since I was coming from a system that was Win 8 > 8.1 > 10 (all in-place upgrades).