Literally can only run one airport, which is KLAX, any other airport I try to load after that just goes into an infinite loading screen for hours, no matter what plane, time of day, or anything I choose. Literally can only spawn at KLAX and that is it.
Also I should say that I have to restart the game everytime I want to do a flight, even at KLAX, so if I do a flight then quit, I have to restart the game to do another flight at klax.