I must admit that I am now in very good terms with FSX-Accelerator.....it is running smoothly still on a swing of 18-37 fps, no flickers worth mention, and no hick-ups from it of any real worry, all sliders 98%up  except traffic which is around 35%..........Lucky?...I guess so.....so to all of you still in the "soup".....good luck!!!! eventually, like me, you will get lucky(?)and you will fly tranquile in great VFR skies that only FSX can give you---may it be soon.... ......I did have a dislike for the Nvidia 8800GTS until the beta 169.09 then 169.25 driver came along, really good I would say.