There are some levels of lag : light, heavy, and unbearable .....
Sometimes you can play, with a minimum delay, others times, you cannot connect any combo, and even move the character forward or back , it's slow, and , sometimes, you can even see the "teleport" effect : things look freezing, and frames seems to be missed during the action .....
Unfortunately, sometimes the lag on MK 2011 is hard, tough, bad and annoying, you cannot do combos in the real time you would like, and you end to be limited to play this game almost as the old MKs 1 and 2, using almost none combo, only isolated moves, like flying kicks, and uppercut ..... even projectiles, you cannot do 4 in a row without annoying delay ..... playing this game in this conditions make your movements predictable , mechanic, robotic, slow motion sometimes ..... when you come back offline, play some ladder after coming from an online session, you feel very frustrating knowing you play good offline, in good conditions, and crap online, with lag.