Hi there,
I am also getting frequent crashes since updating to version 3.7.4. For me, it happens mostly during boarding and/or deboarding, but the crashes are silent and leave no trace or error log. Usually the GSX sounds go quiet at some point, and when I change to an outside view, all GSX vehicles and passengers are gone. There is no error log in the GSX folder, and the normal log file (couatl.log) is already reset from couatl restarting in the background, so it looks as though the whole system just started.
I have had this problem both on the standard Inibuilds A320 and the FBW A32NX, as well as on the Inibuilds A350. It happens at airports around the world - so far I have not been able to discern a pattern. I am running MSFS 2024.