Your rant is completely understood, this sim can indeed be frustrating.
This is a quote from a post a few above this.
It explains what is probably happening in your case.
I have this as well.
“Right now, there is a known, acknowledged bug with Little Nav Map and any other external application / tool that uses the sim’s SimConnect interface to get AI traffic data. It will cause a CTD. That IS a problem with the sim and Asobo is aware of it, acknowledges it, and is fixing it as we speak.”
That means that the sim might be the cause of a CTD for anyone using LNM, FSUIPC, Navigraph, and other tools."
Not connecting these apps to the sim helps prevent this.
AI aircraft affect this. Dialing the amount back if not using live traffic, or turning live traffic off should help.
If you have FSUIPC, there is a command you can put in that app’s cfg. file to remedy this.
That is what I did, with no CTD’s since (yet anway!!)
It may not be the best solution, but until this gets fixed (and it IS being worked on, they have a good handle on what is causing it) it is a work-around.