Update:
I bought and installed a brand new PSU, Corsair SF750 750W 80 Plus Platinum.
This should be more then enough. I also did a cleanup and repair of DCS World to be sure.
Sadly, the game still crashed even 5 minutes after i started the mission above.
I think this 100% a driver issue.
Only thing i can think of is:
- Wipe the whole SSD / NVME
- Clean install Windows 10 Build 1909
- Update Windows
- Install latest drivers
- Clean install DCS World Open Beta
- Load / Play Mission.
Will update this thread / log of my adventures.