Hi,
just wanted to share my findings regarding CTD after some time of flying.
I tested this intensively over the last few days.
Set your sound device (in the sound settings) to a specific device.
DO NOT USE system default. Set a specific device in both options.
I tried this in the last 10 flights. Everytime I had this to system default, my
flight crashed after 20 minutes, sometimes after 2 hours, without any notification.
I did the same flights with all the same parameters, just choosen a specific device,
and voila no CTD. I did finish all my flights without a problem.
I don´t know how this is even possible, but yeah, maybe for some people it´s helpful.