Question for you. Does installing new scenery somehow affect GSX or maybe CYVR.
It will affect CYVR if it has something to do with it, like a conflicting AFCAD. Of course, if it's a scenery that covers airports (or a product that adds airports, like an AI traffic package), you must be sure that it stays BELOW the CYVR layer.
GSX is not affected by the installation of a new scenery, except that you'll have to wait for it to recreate its scenery cache, to add the new installed scenery to it.