Launch and every expansion has had performance issues. This is the first expansion I simply haven't been able to play because of queues. Before WoD I've always been able to get on at some point. In WoD, I've managed to hobble through about 5-6 quests in Tanaan so far and waited over 18 hours in queues through server disconnects/etc over the past two days - that's not counting time I simply didn't bother because I would be going to work before the queue would run out. Not very pleased, I even transferred off a high pop onto a low pop server for this very reason - then we got combined in a mega server and now I can't play. They can at least refund all of my char transfers.