Also if you have a anti-virus programme running you have to expect a bit higher latency in games, so you'd better get used to it. Consider it a confirmation of your PC's safety.
Actually the more programmes you got running the more latency you'll have, well at least that's what I heard.
Secure tool, fake anti-virus remover


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that my style for protect me from idi*t anti-virius now i just use local anti virus and my own anti virus and nod32 