Upgraded to a powerful system two months ago. I have a P4, 3.02 prossesor, two 512's of memory, and NVidia's 5900 Ultra 256. I of course immediately maxed all my FS2002 settings and enjoyed incredibly smooth flights everywhere. Even after installing a few complex airports and big flight plans everything seemed o.k. All of a sudden about a month ago I strated getting the stutters after accidently applying "opensky" aircraft to an AI flightplan at a newly upgraded airport. Those planes multiplied by thirty along with the airport killed my frame rates. But even after fixing those issues along with a myriad of other "fixes" like redoing the fs2002 config, finding as many "frame rate friendly" AI aircraft as possible, reducing my Windows XP to minimum appearence settings, this $4,000.00 investment, which was blowing me away my first month has me wondering why I didn't stay with my Dell 660 hz p3! After reading some of the posts hear, I am observing people with frame rates much higher than mine with half the system. Example, downloaded Reagan National upgrade; a frame rate killer as it is incredibly detailed, my system out of the box should have hardly flinched. But the best frame rates I can muster now at that airport are 12 or 13 fps. What the heck did I do?