Hi, I searched but could locate a thread where a user was asking if they could direct GSX to use a specific afcad, instead of the default. To add information to the discussion, I discovered something last night; I had just purchased Calgary Film studio's CYYC scenery. It's good, but a system hog. It also seems to inexplicably slow the loading of my CYYJ airport. I decided to disable the cyyc scenery until I was in flight. Well, when I landed, GSX only reads the afcads active at the time before you load a flight. Perhaps this is knowledge already discussed, but I found it useful. On a side note, if you do use this scenery, disable everything but the apron lights fix GSX provides the vehicles and if you have project AI installed, you won't need the static aircraft. Cheers!