Just had this problem start happening to me this week as well. I can log in, get to Select Character, and actually get into the game for roughly 2 minutes with everything running smoothly and cleanly… and then the screen goes ‘wrong’, the music cuts and loops, and everything freezes solid. Nothing is listed in the error logs, my computer doesn’t register there was an error at all, but it’s made GW2 unplayable for the time being. Comp isn’t overheating, everything else works after a reboot. Only GW2 is affected.
I can play any other game at full power, speed, and graphics, but starting today, GW2 decided it doesn’t want me playing. I kinda hope it’s just some weird code error that will be swiftly patched, as I also got HoT and have been waiting for it to start.