Quote Originally Posted by Kashaar View Post
When the issue manifests, communication with the server seems to stop. Any characters around you will freeze in place, any mobs will freeze in place. Of course, you can still move around (client-side), and if you're in combat you can continue to cast -- but the mob's HP will not decrease and debuff/DoT icons won't appear, etc. After 5-10 seconds, one of two things will occur. Either A) Everything will "catch up", with damage numbers appearing everywhere and all action continuing normally, or B) You'll get error 90000 and be DC'd. Essentially, communication between the client and server appears momentarily interrupted, and things either catch up and clear up, or you get booted.
I'm having this exact issue, which Kashaar described exquisitely. Like her (him?), this was not an issue prior to the big patch on september 3rd to 4th. I've had no problems playing any other games.

I'd like to add that any action I commit, especially gathering or crafting, seems to serve as a catalyst for these lag spikes.