Here’s an update from me:
Ever since the sim was released on Xbox, I’ve been struggling with CTDs all the time. Now, because of the widespread issues with Live Weather in the past days, I turned it off. It turns out that live weather was the culprit, at least in my case, all along!
Look at the attached image, I stitched two screenshots of my logbook together. The green line indicates the point when I turned live weather off. Look at the flight times above it! No CTD whatsoever, and I threw everything at it: the 787-10 with its glass cockpit, handmade (not third-party) airports, bad weather, everything. Not a single crash since.
All the “Vicinity” and 0 flight times you see below the line are the CTDs I got. When I didn’t get a crash before was only by luck and short flights. Turning off live weather is not as fun, but it enables me to finally fly wherever and however long I want, without the fear of CTD. Now I’m reluctant to turn it back on, even though the issue of the past days has been resolved, because it caused my sim to crash all this time. I’ll keep testing, and enjoying the flights in the meantime. 
