After HOURS of changing settings and my monitor going blank after some changes I gave up for a while. Just Yesterday (01-06-09) I read a post somewhere that suggested turning off Shadows. I did this and on photo fields I get close to 150 fps and with Sierra-Nevada fields I now get around 45-50 fps. This is a big change the only draw back is when the plane is on the ground it looks like it's not touching it. Some Sierra-Nevada fields get better frs than others. I called PNY tech support for the Geforce 8400 card and he said the only way it will work correctly is disable the onboard card. I told him I tried that several times and I lose the monitor every time. I have both cards enabled ,but the monitor is only plugged into the new card. If I disable the onboard card and do a shut down I lose the monitor. I tried it again for PNY and sure enough no monitor after about four hours of disgust to get the monitor back up and running again I never called PNY back.