Hey, I opened the ticket and thought I might share my steps so far
SPOILER: No solution until now...
1) Do not enable MSAA and SSAA at the same time - CAN cause crashes
--> Did that, did not change anything.
2) I installed the "memory cleaner" tool, where I can watch RAM and pagefile usage
--> Both start normally at around 65% usage. Both increase over time. RAM usage at some "spikes" depending on events in the mission (i guess), but Pagefile usage just slowly counts up towards 100%.
With the built in buttons in the tool I can clear and restore a lot of RAM usage over time, however, pagefile usage is not affected and after it reaches 100% it is just a matter of seconds until the crash occurs.
This "counting up" even happens when I am idle on the ground, so something must be wrong with pagefile usage in my DCS setup.
3) Run my GPU (NVIDIA) in "Debug mode"
--> Did that, did not change anything
4) Lower graphic settings.
--> Will do that next, but again: Just a few weeks back everything was fine and worked perfectly well. And now I get these crashes. I do not see the point in changing graphic settings. Especially since it is the same in VR and 2D.
EDIT:
Just did another test. Joined the server, sat in my KA50 and waited. Just happy idling. And yes, Pagefile slowly increased until 100% and crash.