Firstly please don’t lock this or move it to the other thread which also includes various other issues, this might just help find the solution.
I’ve noticed a specific action that causes noticeable frame drops only when sound effects are enabled so please try this yourself and report if the result is the same, it might just help Blizzard debug their sound code.
To set up the test, go to Game menu/Options/Graphics and enable “Vertical Sync”. This makes the frame drop easier to see.
Now go to Game menu/Options/Audio and make sure “Enable Sound” and “Sound Effects” are ticked.
Now press CTRL-R to enable the FPS display down in the corner next to all the game option buttons. Most likely you’ll be locked at 60hz or 59.9hz as mine is.
Now move your mouse pointer over the “Specialization & Talents” button (3rd from the left) and click it on and off as fast as you can for 10 seconds. Did the FPS drop significantly? Mine drops to 53-57 FPS and sometimes even as low as 50 FPS.
Now go back to Game menu/Options/Audio and un-tick the “Sound effects” option to disable sound effects.
Now move your mouse pointer back over the “Specialization & Talents” buttons (3rd from left) and click it on and off as fast as you can for 10 seconds again. This time, with sound effects disabled, the FPS doesn’t drop for me but remains at 59.9hz. So in this example playing the sound effect when that screen opens and closes is causing a serious drop in FPS.
And the interesting thing is, none of the other option buttons down there cause this frames drop, it only happens with the “Specialization & Talents” button. Try it yourself, enable sound effects again and click every other button down there on and off as fast as you can to open and close all those other screens… no drop in FPS?
So assuming others can confirm this, the message to Blizzard is… go look at your sound playback on that “Specialization & Talents” button and check what’s different about it compared to all the other button sounds. Maybe that will help get to the source of this frame dropping with sounds effects enabled problem.
Thanks for reading and please respond with your results.