Flight Sim 2020 keeps crashing even with the a beast of a PC and Video card?

I seem to get crashes under two circumstances:

1. Lowering the graphics resolution thinking that would help, but seems to crash more frequently. Higher, ironically, seems more stable.
2. Using a bluetooth keyboard. My keyboard goes to sleep if not used for some time (using the flight stick), hitting a keyboard key seems to require the Bluetooth re-establishing the connection and it crashes. (Interesting, my Bluetooth headphones don't work with this game (but works with everything else on my PC - I had to switch to wired headphones for sound).

Store/windows/graphics drivers are up to date. 

Just noticed the same thing on audio anything bluetooth is immediately unrecognised by this game yet is working ok on everything else on the PC So another fault!. 

I have spent hours trying to eliminate the crashing of the PC with this game running and nothing works. I have done everything they suggest in the copy and paste response here and more including disabling my two monitor setup, changing resolutions, taking apps off reinstalling FS2020 three times. removing and reinstalling graphics drivers.  Changing the swap file etc  Nothing gets this running stable. I have Windows 10 upgraded to v2004 from 1909 a few months ago so the only thing left is a fresh install of windows. But that seems extremely drastic just for this program and I am not even going to contemplate it. All this messing about means I've probably gone over the 2 hour refund limit so I am going to seek recourse through PayPal as this Microsoft game software is not fit for purpose so I want a refund.

I seem to get crashes under two circumstances:

1. Lowering the graphics resolution thinking that would help, but seems to crash more frequently. Higher, ironically, seems more stable.
2. Using a bluetooth keyboard. My keyboard goes to sleep if not used for some time (using the flight stick), hitting a keyboard key seems to require the Bluetooth re-establishing the connection and it crashes. (Interesting, my Bluetooth headphones don't work with this game (but works with everything else on my PC - I had to switch to wired headphones for sound).

Store/windows/graphics drivers are up to date.

i could run ultra with 2070 super, no problem at all. Try disable all background app/services. Mine once crashed with overclock and those creepy ASUS software running

I hear talk of a patching coming out on 27-AUG. Hopefully this fixes it as well as some other technicalities within the game.

I have a question. Even I pointed the install path of the game and content to D:/, I still find a same copy in C:/window apps (~1GB folder). Does it mean i have to give up this amount of space in C drive no matter what?