Go to the old Win 10 Bulld. I have the same Problem with 980GTX SLI. With old Win 10 Build no Problem´s.
I have the same problem until saturday after I loaded the update. the uninstall of the update had with my system no success there is still another possibility to get the old built ? can R3E help us or we must wait until the next windows update? I have read here in the forum that this trouble has occurred more often after window updates.
Whenever there's a major ... mess up from MS wrt to an update, so far, for me, doing drivers clean install has solved it. Logitech users need a couple of workarounds sometimes but it's doable. That being said, I have yet to try any game since last thursday or friday, IIRC. YMMV