Guild Wars 2

I was having the same exact issue you’re having. After the last update and while playing, my game and system was freezing while the music kept playing In the background. Like you I had to manually shut the mac. After some searching and digging, I found a thread with a tip for a similar problem and I must say that so far, I’ve playing with no problems at all.

In the finder press alt and through the go menu, go to your user library. In there go to /Application Support/Guild Wars 2/. Open the config (just to be safe, make a backup/copy of that file) and search (cmd+f) for the line “MTD3D”. Since the last update they changed the value to “4”, probably to improve performance but If you change It back to “0”, like me you should notice the difference which Is, you can keep playing without interruptions.

There’s another thread around here saying that If you change the value to 1, you get an improvement In performance (around 8/16 fps increase) but I haven’t test It myself.

So, I hope this helps like It helped me.
Cheers