I also have a 100% game crash after playing multiplayer for a few minutes.
I investigated the following:
1) It does not crash on windows10 1909.
* DCS world beta has the same symptom.
2) Antivirus software is not related to crashes. (Uninstalled)
3) The destination drive is not involved in the crash.
4) Some problems have been reported with the new version of the Japanese IME, but the symptom did not change with the older version.
Attach the log file.
Mem :32GB
CPU :i7-4700@3.4Ghz
GPU: Nvidea RTX2080 Super (Driver:461.09)
Free Space HDD : 250GB
Windows10 Pro 2004 Bild 19041.746 (Japanese Version)
DirectX runtime Ver.12.0
dcs.log