Guild Wars 2

I seem to be having the exact same issue you are describing, the problem started sometime between Sunday night and today for me. No issues with other games, checked all my connections, upgraded and downgraded drivers – nothing is helping so far.

I did however let it run for ~20 minutes after the last crash and got an (unhelpful) error in the Win7 event log:

[ Name] nvlddmkm

– EventID 14

[ Qualifiers] 49322

Level 2

Task 0

Keywords 0×80000000000000

– TimeCreated

[ SystemTime] 2013-04-09T23:56:40.273975200Z

EventRecordID 409669

- EventData

\Device\Video11
An uncorrectable double bit error (DBE) has been detected on GPU (02 00 00).
0000000002003000000000000E00AAC0000000000000000000000000000000000000000000000000

My config:
Windows 7 x64
Intel Core i7-3770K
16gb RAM
DirectX 11 (Latest available)
NVIDIA GeForce GTX 660

Everything is at stock speeds. I am going to reinstall the game and see if that helps.

Edit: I reinstalled and seemed more stable at first, but I am running in a window with GPU-Z graphing temperatures now and GW2 is instantly spiking my GPU to ~80C+ temperatures. That is at minimum settings and well over twice the temperatures I ever see running anything else (Witcher 2, Metro 2033, Crysis 3, etc.) at max settings.

I’m not sure what changed to cause that but I’m guessing that’s at least a system of the crashing if not a primary factor (card is apparently rated for ~130-140C or so).