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FiremanMike

macrumors 6502
Original poster
Jan 26, 2011
263
9
I have a 21.5" iMac with a dual screen set up. My second screen is just a regular VGA>thunderbolt adapter hookup. When I play blizzard games, I like to flip back and forth to a web page on my secondary screen.

Prior to el-captain, all animations and graphics on my primary screen would continue to play as if it were my primary screen, despite the control being on my secondary screen. After installing el-captain, blizzard games will freeze the screen when I'm on my off screen. The games still run, and when I flip back I can see that processes have continued, but the screen remains frozen from a graphics standpoint until I flip back.

Thoughts?
 
As an update, I disconnected the second screen and tried it on just the iMac, still have no video multitasking in the background...
 
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