Guys, I would be reverting your nvidia drivers back to at least 334, or further back to 332 and testing again.
There have been many other users over on Nvidida forums reporting freezes and crashes on other games as well, not just DCS.
Even I had problems with 1.2.8 and the latest drivers. But strange enough it occurs in MP only.
I've gone back to 332, reinstalled DCS and haven't had problems just yet... Knock on wood.
I have a feeling the latest drivers have serious issues with WDM and DX9.
If AMD/ATI users are having similar, then that's something else entirely that might point towards the game then by coincidence.
I would say at the very least, driver versions should be posted with these reports.
Edit: I see you are on 335 in your dxdiag, try 332 drivers out.