My normal Windows swap is at C, had rollingcache at D and the game. Now both game and rollingcache are moved to E. If you can’t click fly without a crash I call it a bug which can be fixed by Microsoft/Asobo. I also added the info to my Zendesk ticket so it might save them some searching.
But like you say, a piece of software as complicated like this were some people also have like 500GB worth of addons programmed by third-parties is hard to get completely free of CTD’s.
That it works for some (including me) to just move the sim to another drive does not make really make sense. I also wonder what happens if I move it back to my NVme since that helps the loading speed quite a bit.
But for now I’m happy I can click fly and see immediately a loading bar instead of black screen followed by my Windows desktop.