Just to add, I'm gettting the same issue with a freeze of MSFS24 if i try to spawn in at KIAH in the Fenix A320 but if I remove the "kiah-fstd.ini" profile then I can spawn in and move around freely
I have a created a new empty profile and I can still get into KIAH without problem so I think as was previously mentioned it may be something to do with the GSX profile.
I'm currently trying a profile from Flightsim.to (GSX KIAH V2.1) and so far I can spawn in and taxi out without issue. I've tried both C3 and E3 where I had issuses and it's working fine for me so far.
I did have some success removing the GSX profile and using the GSX KIAH V2.1 from flightsim.to but both efforts were short-lived. Eventually, the issue returned. I also noticed that when you run the updater for GSX with FSDreamTeam KIAH installed, it replaces their GSX profile in the folder automatically. Further testing, I removed the FSDreamTeam‘s KIAH altogether and noticed I am still having the same issue unfortunately. The only way I can run the Sim anywhere within the vicinity of KIAH is by disabling GSX by ending the process in the taskbar. Then when I leave the KIAH area, I can restart it and all is fine.
If I try to launch at IAH with GSX running, I get the freeze 90% of the time. In the above scenario if I leave GSX running while flying over KIAH I get a CTD.
I also wanted to note that in the cases where I can get in and move around without any issue, restarting GSX through the menu in simulator will cause a CTD or a freeze for me. Also about 90% of the time. I know that in most cases, there’s no need to restart GSX via the menu in the simulator, it was just something I noticed during troubleshooting.