Originally Posted by Napoleonic
well as I understand it, DCS has always run better on the green side.
Not always. At one point I bench-marked a HD6970 vs GTX580 and was getting similar results. FPS on a HD7950 halved in DCS A10C after a patch release by ED, no driver changes involved.
This is purely down to the developers and IMHO any dev who refuses to (or can't) optimise for AMD hardware does not deserve our support. I will not tie myself to Nvidia only based on a game coded by amateurs. Espcecialy when they are happy to blatantly lie to their customers.