We (me and my girlfriend) just bought the game.
We log in from Italy onto the Fissure of Woe server; in spite of our fast, optic fiber connection and up-to-date hardware, the game is lagging badly. No way to play.
This is kinda annoying, especially considered that we payed the game just to see a so poor performance that is easily surpassed by almost any free mmorpg. It is even more annoying to see that the first issues date back to 2 months ago and are still unsolved.
I’d gladly help to solve this problem, but, apart from obvious things, I can only tell you that in my task manager I can see the ping to two gw2 related servers, one is roughly 350ms and the other around 100ms. It’s so on average, sometimes the 100ms one increases to more than 500ms.
I hope you solve the problem, it would be a pity not to be able to play such a fine game.