X58 Asus Rampage III Extreme - Windows 10 Slow

Is there a Bios version for this mainboard that will revert the OS to not cutting Dota 2 fps IN HALF ? For "SECURITY REASONS". Yeah right. Cant i enjoy 200+ fps on a used xeon.
Is it too much ?

Xeon X5675 @ hopefully over 4ghz
3x4 GB Munkish Stealth DDR-3 2133 CL10 on tripple channel
750W Corsair TX-M