My lag has gotten so bad now it is absolutely impossible to play, which sucks because I love this game so much. One of the best games I've played. However if this lag keeps up I'll have no choice but to just drop the game as it isn't plausible to play with this insane lag.
Hopefully square enix will sort this out soon, I have been playing a couple other online games in the meantime with no issue so I know its not my end.