I was having very similar problems on my HP Omen "gaming notebook" which is also my mobile office. Hex core processor, decent SSD and an onboard NVIDIA GPU. Running Windows 10, early release 9developper cycle) but only stable versions.
Crashed without any real provocation. Especially if I tried to fly out of my local airport - instant drop to system. Lessons would freeze part way through.
I'd downloaded it about when it came out then upgraded from the store.
So I reset the application.
Still crashed randomly
Investigated virtual memory settings and shifted to system managed (that shrank the pagefile, I had set it to a monstrous value for some Excel work I do)
It still crashed!
Upgraded to Deluxe rather than the "Games subscription" lower cost version. (Just in case.) That had it do some stuff that looked like it truly believed I was licensed - but it still crashed.
I de-installed the software after resetting, reinstalled - and even with an 80mbps download speed, that was like watching paint drying. This is a most bloated bundle of garbage. It downloads every "challenge" in its repertoire, consuming around 100GB. Big
fat bloated code base.
Wondering if the default play settings were too rich, I dropped the frame rate down to 24 fps.
The flying lessons now work stably unless you flow on to the next lesson. Then they just crash to system.
So I've spent around Aus$260 (US$190) on a chunk of software that was promoted heavily by MS as the best flight sim ever. It is not ready for commercial release, It is not fit for purpose.
Anyone want to get a class action going for mail order fraud?
I spend my working life advising clients how to securely design secure IT systems. The total unreliability of this MS badged product makes me wonder about reliance in all MS products.
John