Originally Posted by KurianOfBorg
I cannot even create a surround group since one is a 3D monitor. If I don't extend the desktop to the AVR, the audio device appears with the AVR name but is marked as unplugged and doesn't work.
After playing around a bit more, I'm going to go ahead and say you're right about this, at least with regard to the built-in Windows functionality. I have to extend or duplicate onto the second display for the AVR to stay connected as an audio device.
The eyefinity solution of creating one virtual monitor and only using part of the total resolution still works fine, though.
But, even when using two distinct monitors and extending the desktop, which is my usual setup, I don't have any issues with tearing or lag like you've indicated. At least, not with my desktop PC.
My laptop, with the integrated Intel HD4400, does show tearing but only when set to duplicate, not extend. I'm pretty sure that's due to the mismatch in refresh rates (59.97 for the TV, 60 for the built-in display.)
I agree there's a problem, but I'm pretty sure it's specific to particular setups, since only one of my two computers has issues with multiple monitors.