I normally don't have problems with lag, just every now and then. It was weird with me and big mac because our fight was super lagged out, but when we sparred no problem.
my game is all about counter punching and side and back stepping so when there is bad lag it messes that up big time, either it doesn't register or it will give me an unintentional bob & weave, which is awesome when you weave right into a punch lol