I don't want to be that guy that says, "My game isn't working! Fix it, internet people!"   But here I am looking for SOME clues. Any help will be much appreciated.   System: Win 10; beefy 8700K with 1080, 32gb RAM; water cooling, 4.4ghz OC - can go to 5ghz, but keeping it conservative now. Multiple SSDs and HDs. Game and Win on SSDs. Been running Arma 3 for years without a problem like this. Using plenty of mods (mostly ACE3 and RHS, plus maps) -Standard kit of my unit.   Symptoms: Game runs totally fine in SP. For hours. Sometimes, when joining MP game (on dedi server), game will run fine. But sometimes it will start crashing to desktop. Rejoining usually results in immediate crash again, but sometimes it takes a few minutes. I've run a two-hour op with no trouble, then the next op I am in game for 10 or 30 minutes, then it crashes out.   Notes: Heat of CPU is not a problem. Tried using Steam to Verify Game Files Integrity...no change. Tried uninstalling whole game and reinstalling. Thought that fixed it, but on the 2nd op after that, it's crashing again. Tried checking HD and SSD status; doesn't seem to point to any issues. I've tried running without any mods, and I get the same crashes on public servers.   Reports end with something like this: Fault time: 2019/09/25 18:26:40
Fault address:  8000A90E 00:8000A90E Unknown module
file:     co40_civil_war_v01 (__CUR_MP)
world:    pja310
Prev. code bytes: 00 00 48 8B 17 EB 5D 4C 8B 42 58 4D 85 C0 74 0E
Fault code bytes: 49 8B 00 48 89 42 58 66 44 01 6A 74 EB 2E 4C 8B   Does this point anyone to anything? Any suggestions?