DirectX or Open GL

[RickRuski]

What is this sim optimised for? DirectX or Open GL.

If it is DirectX then maybe some of the problems members are having are related to DirectX versions. I have pre-ordered this in NZ (expected release 15th April) but some of the posts have me a little worried (if I told the truth a LOT worried) about how this game will run on a middle of the road system. I am running il2 1946 perfect settings with 2xAF and 8xAA with no problems, frame rates on most missions 85--30fps (this is what I am getting with "Black Death" track") with smooth play.

Asus p5b
e6600 Core2 duo
6gig ram
HDD1 1Tb
HDD2 320gig
9600gt 1gig
Windows 7 64bit