If you are having problems anyway and especially if using Vista (since you can't force vsync disabled in Vista) it is worth a shot. That brings about the next potential problem- it uses more GPU memory as it is loading 3 images. You could potentially develope some mouse/control lag as there is more memory being used.

There are some possible negative effects of Triple buffering though- You can get potential visual anomalies with some games. Therefore, by forcing triple buffering you are getting a 'third buffer' being processed into the cycle to potentially reduce lag and stuttering effects since there would be an extra buffer in to fill and not have to wait to empty one to begin to fill it again. If your FPS drops below the refresh rate of the monitor at any point then the primary must wait for the next 'refresh cyle' to send the image in its buffer, therefore holding up the cycle as the secondary buffer already has a processed image in it and can't move forward to send it, it basically stops the process briefly and drops FPS (which I understand causes lag/stutter).

You have 2 buffers in your video card (primary and secondary), the primary sends the image to the monitor while the secondary loads the next image and the 2 buffers cycle back and forth. To understand this you need to look at how the card works. If your monitor makes your card hold up it could potentially cut your FPS by 50%. it syncronizes your card and your monitor and caps the FPS at the max refresh rate of your monitor.

Vsync makes your Graphics card slow down the rate at which it sends images to your monitor (especially if you have a relatively good car), i.e. For those who don't understand vsync (I had to do some research) this is a 'brief' explanation from my little understanding but it may help. This is good for Vista users since Vista does not allow you to force disable of vsync through your graphics cards interface.

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