There's been some massive lag on 4 man dungeons. Also tried Titan storymode and it was pretty ridiculous.
Anyway, the dev team is aware of this and they're trying to figure out what they can do about it.


Currrent Known Issue Regarding the Delay Experienced in Certain Instances (Mar. 29)
After the release of patch 2.2, we have confirmed an issue wherein players experience a huge delay in their character’s actions while in certain instances.

We understand that this issue needs to be addressed with priority so we are currently working around the clock to investigate and address this matter.

We apologize for any inconvenience this may cause and thank you for your understanding.