Navigate to the game's installation folder (e.g., Steam\steamapps\common\Call of Duty Black Ops II ). Right-click the .exe files ( t6sp.exe , t6mp.exe , or t6zm.exe ), go to Properties > Compatibility , and check Run this program in compatibility mode for Windows 8 or 7 .
Roll back to driver 472.12 (Game Ready) or 466.77 – known stable versions for older Call of Duty titles. Navigate to the game's installation folder (e