Finally got the game to launch, without crashing immediately, by enabling Mantle Crossfire and keeping Mantle unchecked.

However, it is not touching the second GPU at all, which makes playing @ 2560x1440 & 20-30fps, no fun at all.

Does anyone have any suggestions to getting this game running the way it should be? I know there are people playing, who have multiple GPUs, so I have to be missing something.

I am using the latest drivers, as of 9/24 and this was after trying out the latest BETA drivers, to see if maybe that was the problem.

I have tried disabling mantle, enabling mantle, the 32bit launcher... no luck. I'd really like to be able to play the game with the settings I should be able to, with my current setup.