Question about vsync

If vsync is supposed to lock the refresh rate to the monitor refresh rate, how come when I play LOMAC it sometimes skips frames completely? I'm playing at full detail and resolution because I figured the 8800gts can handle it, and it's OC'd, but for some reason I'll be strafing some tanks and all of a sudden I'll be a hole in the ground. Is there a reason it's doing this?

Also, could it have anything to do with the fact that I'm running Folding@Home? I'm running the text client and I don't know how to turn it off when I play so for now it's staying there

 

Vsync will let the max fps of your games in this case 60fps cause the monitor is 60hz max. the problem is with vsync on if your not exactly at 60 it will sometimes drop your frames to half that being 30fps and it can go even lower and create a very studdering mess what you can try is go into the nvidia control panel and enable triple buffering for the game your playing or just enable it universally, this is supposed to help games when your running vsync but again your mileage may vary . i rarely play with vsync on because of these issues but some people cant handle the screen tearing and have to play with it on.

 

did you install Folding@Home to run as service ?
anyway if you go into task manager / services
you will find it there, right click it / < stop service >

if its not running as a service just ctrl+c should do

 

I tried that and it told me "Operation could not be completed. Access is denied." WTF. I'm the administrator.