BO2-Raw-files/default_mp_gamesettings.cfg at master - GitHub
Enhances peripheral vision, allowing players to spot enemies faster on the edges of the screen. 3. Mouse Smoothing and Acceleration defaultcfg call of duty black ops 2
For alternative clients like Plutonium T6, look in: %localappdata%\Plutonium\storage\t6\players\ BO2-Raw-files/default_mp_gamesettings