As promised, I want to tell you my results with FSPS Xtreme FSX PC V2.My Frames increased for around 5 FPS, so it is not "the ultimate program", but it helps to get the last out of FSX. I now get 25-30 FPS at Mega Airports from AS in NGX VC. The integrated calculater did not help for me; I had to try the different slider settings. (On request, I will post some pictures.)The only thing you have to do is running the program, create the settings you want and click on "Profile Default" (it loads the settings to the FSX.cfg). Then you can start the FS.You will have to test a lot the first time, but it is really worth it!!!!!As it is not too expensive, I would recommend to try it.Good luck

Yes, the same for me. Sometimes even 7/6 fps, depending on the airport.Eric