Hello, after discussing with some people on a server's discord, I think this might be related to an experience I had about two weeks ago.
You're gonna have to bear with me as I may struggle to find the log, but I have a pretty strong recollection of the events leading up to it. If I find the log I'll post it
[Bug Encounter]
Working in the SP mission editor on a scenario, it is this one where a ground assault plays out and you're there assisting in your Mi-24.
(Important note, while testing it during this session, i had not loaded up the Mi-24P, or any other module, it was purely a spectator session afaik)
Inside the mission you have 12 red vehicles, 15 red artillary pieces, 12 blue bunkers, 8 100mm KS-19 flak cannons, and another 4 IFVs all expend their entire magazines by the end of the test run (they fire continuously for 20 minutes)
After loading the scenario and testing it about a dozen times, I noticed the 125mm cannons on the T-72s doing no damage to bunkers, despite having the correct shells loaded. I jumped in to control it myself and indeed no damage had been done.
after closing the mission my game proceeded to crash I think.
once again, I'll have to check and see if I still have the log, but knowing how online servers are sorta operated on the mission side, I think it has something to do with the most likely either the quantity of projectiles or time elapses since session starts. From discussions once again it seems to affect only the machine hosting the server, and as soon as a player takes control of the vehicle, the object now being simulated on the local machine begins to register damage to the target again