Hi!
EDIT: After some testing I found out that anolog multi channel audio works. So it seems like a problem with DTS.
Have been searching around the net and no info about this.
The problem is that I only have stereo in game. Threw grenade and turned around and sound only from front speakers. Surround 5.1 works nicely in Dying Light, Borderlands 2, Far Cry 3. Heck! Even Fallout 3 has surround sound =D.
My system outputs 5.1 via spdif (optical) using DTS Interactive. But this shouldn't matter since other games are working flawlessly.
Any info on this? Or are you all playing just in stereo?