6870 Crossfire, crashing in Civ 5?

[VirtualLarry]

Is this happening to anyone else? I built my BIL a rig with a Q9550 @ 3.5, Gigabyte X48-DS5 mobo, 8GB DDR2-800, and two HD6870 cards (Sapphire reference card).

He says that it is crashing Civ 5 in Crossfire mode, at least he's found other people who seem to have the same problem.

Does anyone else see this problem, or is there something wrong with the rig?

Also, one other note...Directx 10/11 should run just fine as long as you disable crossfire...Lord_Zath has been able to get it to run on older drivers (10.3) with crossfire enabled, but I haven't had any luck with it running from 10.7 and up with Crossfire Enabled.

I have 10.11

i have played around 2 hours without a crash with crossfire enabled.

before it used to crash at 20-ish turn

the only things i changed is I right clicked on the game .exe (the one with Dx 11) and i went to the compatibility mode and selected "Windows XP SP3" and i ticked "disable desktop composition" as i found this to cause some problems some times

(But wouldn't compatibility mode for XP disable DX11 mode?)

http://forums.2kgames.com/showthread.php?88456-Civ-5-with-ATI-adapters-in-a-Crossfire-configuration