Lag in Instances + Endless "loading" screens when transitioning to a new area

[Madigari]

Since the implementation of 2.2, I've been having some real lag problems in the instances. Prior, I would have slight latency issues every now and then (a skill wouldn't fire and could be recast as soon as the client-side timer ended), but very scarcely. But, for example, I constantly have skills not firing due to lag between myself and the server. In four out of the five instances I've done since last night, other people in the instance were also complaining about severe lag.

On a related note, I've tried transitioning to new areas (teleport from Gridania to Limsa Lominsa, accepting my duty finder for Halatali), and have gotten stuck in an endless loading screen. I've left the game running for 20 minutes when the teleport from Gridania one occurred, and it still stuck me in Gridania. [EDIT: I should say that after I force close the program and start it up again, I am where I tried to transition to.]

I've tried testing the speed of my connection/connection to other games and websites, and they are all in working order. So, if anyone else is having this problem, or you know of a way I can test whether it's specifically my connection to the server, please reply in this thread.

[UPDATE: Square Enix has made a post in the news section regarding this issue. I'll post this information here and in a fresh post, in case people who have viewed this are just skipping to first new message.]