I run both Malwarebytes and Avast continually on, with new downloads checked (by both) along with once a week complete scans by both. I'm inclined to think this is a windows 10/DX11/FFXIV implementation issue of coding, but possibly the NVIDIA GTX 780 is involved in some way too. Just thought either someone would have similiar issues, or have a Windows 10 specific perspective.

Thanks all the same for your advise Jinwa!

In the meantime, I guess I'll just stay on dx9 for FFXIV, seeing SE has no input.

FYI - Other games I have using DX11 have absolutely no issues... only FFXIV (since patch 3.05 hotfix on 8 Sep 2015).