I've been troubleshooting since about a week after 2.1 released. My ISP (AT&T U-verse) claims no other users have informed customer care of having issues with this game. I've shown them trace routes detailing most issues going through nodes owned by Cogentco. AT&T U-verse says, if there aren't any other issues with my network (true), there's nothing they can do to help me. SE NA chat support has been helpful in teaching me how to troubleshoot. I didn't know that port forwarding, DMZ mode, or open DNS were real words prior to December. Learning is fun. Google DNS did have some positive results...not enough to make current end game content completely playable, but it's something.

I've said something similar in other posts on this forum (and others): having to constantly troubleshoot, waiting for a patch to magically fix everything, and hounding all forms of customer service to no resolution has nullified the fun I used to have playing this game.