hello All;
i dont know where to ask this question, forgive and redirect me as needed.

windows 7 runs direct x 11
my video card runs direct x 10. nvidia 9500gt pci-e
the game i play is Americas Army 3 which runs in direct x 9.

is this configureation going to cause performance issues as there are three versions of direct x handling going on. should i drop to windows xp while playing this game or can these three direct x versions work with each other?

GameDev.net is a forum dedicated to game developers, so this kind of question doesn't really apply as a relevant question here. The best place to ask this would probably be the "GDNet Lounge" section.

Anyway to answer your question: No it won't cause significant performance issues, in fact I'm guessing it might even run faster because there might be improvements in the new drivers.