exactly the same here. my OC Scanned (Nvidia tool) 2080ti passes all the benches i throw at it, it steams thru all the games i have, yet in DCS i get these odd crashes ever since i updated to the last patch
so far i have downgraded to the previous nvidia drivers, and resumed the stock clocks of my Palit card, and it seems to be more stable.
if it's any use to anyone, i used to have this kind of issues with DCS when i was applying any XMP profiles to my RAM, so i gave up on that a while back.