Having just upgraded to FS9 its plain to see they have added ALOT more gates to the bigger airports like Heathrow, which has meant that my performance has been anhhialated by project ai airlines..
i can turn the traffic down, but it means turning it back up after take off and before landing otherwise no other airports have any traffic!!..
basically it sucks! i need to have less planes on the ground at only heathrow, or drastically improve my framerate somehow..
ive turned off aircraft shadows etc in a hope to improve it.. but not much luck so far!
its just bad because the performance at every other airport is great, but at heathrow it suddenly dies..