Guild Wars 2

This has only happened to me in Straits of Devastation. The problem is that during a large event where many skills are being fired at once all of a sudden my sound collapses to a very intense ‘bleep’ that can only be fixed through muting GW2 with the windows mixer or restarting the game. I’ve tried to change the volume of music, environment, muting ingame, even if i have ‘mute GW2 while in background’ the sound is still there after I alt-tab out of GW2.

happened again in a large WvW fight

I experience the same thing, recently with the dragon in the 40-50 map (something Steppes) it even caused my game to lock up, twice, in the same fight.

It has only happened in long, long boss fight events where many players are involved (like 40+). Not sure what is causing it, my FPS seems very good so I doubt it has any ties to my video performance.