I spend all my time online flying in and out of Atlanta on VATSIM now and and I am finally ready to start diving into some better scenery...either free or payware.

Anyone know a truely amazing Hartsfield or Atlanta in general scenery addon to put to death the sorry FS default crap?

And how are these as far as affecting frame rates? Mine already is struggling between 4-8 on the ground and 10-20 in the air.