My PC barely keeps the framerates OK to comfortably fly. Well most of the time its OK, abt. 15 to 25FPS and a little lower when I come to a larger airport.
The most unusual thing is that I have some 3rd party airports with complex scenery and my framerates are OK, but when I come to the DEFAULT FS2002 FRANKFURT MAIN (EDDF) airport my FPS drops considerably. Wierd when considering that FPS are OK with complex 3rd party scenery!