Guild Wars 2

… my 2011 iMac (with up-to-date software).

The sound kept getting increasingly louder and didn’t at first ‘sound’ like it was even coming from my computer, which was directly in front of me.

Weird.

Was fighting Jormag, which wigs out my computer normally so was prepared for that. It gets very warm, the usual, but today suddenly no sound, can’t move, black screen of death, that weird noise, and eventually all I can do is force quit.

you have to turn your sound settings down. This happens in high population areas when to many sounds are played and it overloads. This also happens on PC version.

go in to options and make sure sounds setting are default or lower.