Lesson for Rebellion:
Next time you decide to release a demo for a game before release of full game, do yourselves a favor and include all graphical options in the demo such as dx11, its quite possible that if DirectX 11 was available in the AVP MP demo you would learn there are problems. Since it seems your QA or publisher QA failed on this front, at least people playing the demo would inform you of dx11 issues. Instead, these issues come to light after release of full game.
To sum up the lesson, If your game includes dx10/11 release the demo with all directx versions available.
"On 2646.215 I myself attacked & destroyed TCS Tiger's Claw in my Jalthi heavy fighter"Bakhtosh Redclaw Nar Kiranka