Guild Wars 2

This is going to be an earful, so here goes. I’m posting this in hope of an official response from Arenanet. At this point id probably give an arm and a leg for any contact from them, that being said, here is my issue.

I Have a very new PC, Its an alien ware and should run Gw2 fine. My specs are as follows:

Intel i7 (3rd generation) i7-3770 CPU @ 3.40GHz
8gb dual channel 1600mhz ddr3 ram
Nvidia GTX 660 1.5GB DDR5 Graphics card
Alienware x51 motherboard
2tb Ata 3 hard drive
23 inch 1080p Dell monitor W/ Dvi-D as my output source.

Ive spent days now browsing the forums and practing my Googlekittenlooking for a solution to this. I’ve come up dry. I’ve supported an in game report on this issue as well so here goes.

I launch GW2 and it runs fine. better than fine. Im getting between 60-75 FPS with everything maxed in starting areas for both sylvari and Humans, And steadying 60+ even in the human city ( cannot recall the name) I did a few "random events with 25-30 other players all casting together and never saw my FPS drop below 48, which was lowest, and averaged about 55-60 even during that. My issue is roughly 20-30 minutes into the game, I will get either a black screen of death (game freezes/locks up and have to reboot the client or my pc) or more commonly (every time i’ve played so far) my FPS is fine for the first 20-30 minutes and all of a sudden i get a brief like 1/2 to 1 second black screen or screen flash and my fps crashes to between 14-25 and stays there for the rest of the time i play. for example : if its at say 18 FPs even in an event of 30 people casting it does not fall below 18, and stays at 18 even after the event during regular play. zone changes, teleporting ( quick travel) does not matter, nothing does. It just Sticks at 18-25 after the Previously mentioned “screen flash” Its not my CPU or GPU temps which are fine and at completely normal levels. I have the newest Nvidia graphics drivers ( Feb. 18th release) as well as Intel drivers and all others are up to date as well. This issue is extremely frustrating and i’m not sure what to do. I’m practically begging for a response from arenanet as i write this. just for more info, I’m getting 90 fps in WoW on ultra in 25 man groups and multiple hardware tests have shown its not my PC. Also settings changes do not effect FPS at all (even if changed to low). Any and all advice is much appreciated.