I use Justflight FS Traffic together with PMDG and GSX. Yesterday my first crash since i flown the PMDG twice around the world. I pressed the jetway button and MSFS froze completely. I had to exit by CTRL ALT DEL.
After that first crash i updated GSX again and tried again. That time MSFS froze after being told to release the parking brake. Nothing responded anymore and i had to exit with CTRL ALT DEL.
Tried twice after that and i uninstalled GSX and guess what...MSFS runs like a charm. Another thing i noticed is that airports are finally filled with AI traffic from FStraffic. Allthough GSX was setup to avoid clutter.
Anyways, there is something wrong with GSX, hope you can fix it. Till then, no GSX for me. But hey...i allready paid huh.