It's been more than a week now so I figure I try posting this and see if someone has something that works.
My game runs perfectly fine outside of any encounter of a load screen. Any time a load screen occurs there is an arbitrary chance that the game will just hang, I might even hear the sound effects from the next zone but it would be stuck at the load screen. During general play it's not an issue, and dungeons are fine until a wipe occurs which involves having to encounter the load screen when corpse running. It's especially 'unplayable' and annoying when trying to do arena matches because of how frequently a player has to encounter an unreliable load screen that could potentially cause yet another forced alt-F4/relog.
The hang basically looks like a load screen with the blue progress indicator completely filled.
This persists even when cleaning out the WTF Interface and Cache folders. As well as on fresh reinstalls of the OS and game itself on multiple computers.
Being that every test has been done on the same internal network, I understand someone would be quick to blame a router. If you're going to blame my e1000 router, tell me about some PROVEN settings on it that cause this kind of issue.