unable to play AHY TDM mission

[dickivy09]

I don't know what to do. It started with failing to load saved games and now, after the latest download, I can't start ANY mission.
It's fine until I click on "start mission" and then my pc just crashes and I have to reload the OS.
Velocity z20
64Mb memory @ 4000mhz
Intel I-7
Geforce 1080
1TB had
500Mb SSD.
When I reboot from set-up, there is no indication as to why the PC powered down. And yes, it shut down the power.
Any help is appreciated.
Thanks,
dickivy

[Azaran]

Have a look here

[dickivy09]

Have a look here

Thank you so much.
I made the recommended .cfg file additions and now it seems to be working again. At least for the first try to load, play, save, reload.
Thanks again.
D

[Azaran]

Cheers