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Maybe it may be an issue with cache, try to clean it. In case you don’t know, the cache location is usually at C:\Users\<your_username>\AppData\Local\Temp\gw2cache-{<a_few_numbers_here>} on Win Vista or higher, not sure the location for other systems though. Just delete the folder called gw2cache-{***} while not in game and then restart the game. Good luck.
Does it also crash the game for you? Has been doing that a lot to others, over 90% of the time for me so far since the new tp was rolled out.