I’ve had this problem for about a month right now. I got no problems with FPS (constant 70-80) or a ping (about 40) , but GW2 has been freezing in random moments, like for example when fighting Tequatl, or when PvPing and then crashing the graphics driver forcing me to restart the whole PC. I have Windows 7 64bit, and have been trying both the standard client and the 64bit client. No error message has been displayed, just a freeze, crashes the graphics driver and im forced to restart. No other games or programs are causing this.