I was running windows 10 and on the day of the windows creators update I started getting some horrible screen tearing. After a while I switched to Windows 8.1 to make sure Xbox DVR, and game mode, would not be a factor. But I still get screen tearing on windows 8.1. I contacted blizzard support since it was mostly on over watch and they said there is something wrong with my GPU.
I have attached the same MSINFO and DxDiag files I gave to blizzard.