Vertical synchronization stops your video card from outputting frames faster than your monitor displays them, and thus prevents screen tearing. Vsync also effectively caps your frame rate and can induce input lag, making it a tradeoff. Triple buffering alleviates these negative features of vsync by storing an extra buffer of video data. Using a third buffer also requires more video memory and can cause display errors on programs that don't support it, so turning it off may help if your card doesn't work well with it on.
Nvidia Graphics Cards
Right click your desktop
Right-click your desktop and open "Nvidia Control Panel."
Select Manage 3D settings
Select "Manage 3D settings" in the task panel. If you want to disable triple buffering in all programs but those with exceptions, open the "Global Settings" tab. Otherwise, switch to "Program Settings," and then pick a particular application to modify.
Click Triple buffering
Click "Triple buffering" in the settings list, and then change the setting to "Off."
Press "Apply," and then close the window.
AMD Video Cards
Right click the desktop
Right-click the desktop and pick "Catalyst Control Center."
Select the Gaming'' button
Select the "Gaming" button, and then click "3D Application Settings."
Scroll down to the OpenGL Settings section
Scroll down to the OpenGL Settings section, and then uncheck "Triple buffering."
Click "Apply," and then close the panel.
Some games and programs have an internal video setting for triple buffering that you can use instead of altering your video card's settings or if you have integrated graphics.