Well, the deed has been done... in the fall, I gave up on my GTX 1060 and ordered an RX 580 8GB (which works beautifully, I might add). Around the time this thread began, I was able to contact NVIDIA support and properly convey the issue to them; they were able to replicate said issue in a lab, and they told me that they would work on it. Some months passed, and I still hadn't heard anything. I think I e-mailed back twice—the latest being July of 2017. Subsequently, I received a reply (as can be seen on page 8 of this thread), but it only reminded me that progress is still slow and the cause of the glitch is still unknown.
I am glad that they had initially reviewed my e-mails and had reproduced the glitch themselves, but what eventually began to irk me was the fact that, apparently, zero realistic progress was being made, in finding out the source of the glitch. It is my belief that this card is doomed for good—that we likely will not see properly-working drivers with this generation of NVIDIA cards. If and when Apple releases a new Mac Pro, they'll likely prompt NVIDIA to up their game a bit with these drivers; however, for now, it seems as though these fantastic cards are relegated to shoddy support. I've given up on this. I'll keep up with the news, but I certainly will not continue running this GTX 1060 within my Mac Pro. It works totally fine under Windows, but it's not to be running OSX.
And, I would suggest that you all purchase the RX 580, but miners have since driven up the prices. For now, I feel as though it is more worthwhile for a Hackintosh / Macintosh user to—if he wants NVIDIA—run a GTX 960/970/980. There is too much hassle associated with 10xx cards.