El hecho que tu PC sea lenta no tiene nada que ver con el lag.Iniciado por LSF ^^
Ya que muchos cometen este error a cada rato, lean:
http://en.wikipedia.org/wiki/Lag#GamingLag, from "lag behind", is a slang term for slow Internet speeds or Internet latency; Lag is sometimes due to a server problem, but more frequently due to the connection between client and server. A slow or intermittent connection may often be referred to as laggy.