This probably should be on the AMD or Windows 10 feedback forum, rather than here.

That said, I run that very same build and have no issues streaming while playing XIV. Is that driver Windows 10 compatible?

I'm using a GTX 770 atm, and Nvidia has a signed driver for Windows 10 now - but before they came out with one, I have weird issues like you're describing. (Albeit, I was also running a different build then as well too)