i have a update that i want to share that might be interesting to other fellow players:
Installed Windows 10 professional, changed the SSD from a Samsung 840 PRO 256Gb to a 860 PRO 500Gb.
Windows 7 DX11 - In Boralus i used to have between 35 fps and 50 fps;
Windows 10 DX12 - Now i have Between 50 fps and 80 fps but its usually above 60 most of the time;
Open world in BfA:
It varies from area to area but the average is a increase between 20 and 50 fps.
Im surprised and happy with the improvement, since it is very noticiable.
2 extra notes:
1 - I have a Intel i5 6600 and a Nvidia 1060 3gb, wich were the same i had before the change from Windows7 to Windows10;
2 - All that i mentioned, the fps gains, happened while i even increased some definitions in the game, wich makes it more demanding.
Environment detail from 7 to 8
Ground Clutter from 7 to 8
Shadow quality from Fair to Good
Just to name a few, i improved more definitions.