Last night, my queues were decent, but once US prime-time hit, the lag got pretty bad. Was going to blame it on my connection until I saw a lot of others say the same thing.
I mean, the lag wasn't unbearable in in most dungeons, but it was fairly severe once I tried doing a Diadem (Hard) with my FC.

The weirdest part was that everyone would freeze and suddenly warp around until my client caught up, while I would appear to be moving normally on most of their clients. If I didn't say anything, they probably wouldn't know I was lagging.