Since my internet connection is being very slow lately, making online play difficult, I've been gunning to get a few of those achievements in SC2 that I've never bothered with, mainly the custom game ones. This involves setting up custom games against only AI opponents.
However, even when I play these custom AI games, when there's nothing to lose and nothing to prove, I'll be lagging with myself. I even came close to getting disconnected in a few games. The only human opponent involved is myself; how can I be lagging in this sort of situation?