I think all lags answered by the one and only VGA problems....why? Lately i had that kind of problems but i realized if ever would changed my VGA to a new one same specs, and guess what
i got a smooth gaming process and even updated my VGA nividia Geforce 15XXGT sofware drive so that you can able to play and experiencing smooth and kind of less glitch movements and boring stunts....Now if ever got lag then better check and inspect your ISP...if you dont get it then watch some youtube stuffs videos so that you can learn something from it...
BACON?