Jwenting From Netherlands, joined Apr 2001, 10213 posts, RR: 21 Reply 2, posted (11 years 4 weeks 3 hours ago) and read 1889 times:
Like with FSTraffic in FS2000, the more complex the visual model is the harder the impact on your machine's performance will be.
That's a major reason why Microsoft made their models with relatively few small details (cost being another).
They would work, but with several crowding an airport you'd notice a serious performance hit. Same with the new POSKY 767 and A330, etc...