Ive been playing beammp on the same setup for about 6 months absolutley no issues. All of a sudden when im playing gridmap on the default server my frame rate will go from 100ish for about 3 minutes then suddenly drop to about 10 then quickly gets worse until it crashes. The whole thing happens in less than 10 secods from the first lag spike. I saw in the in game chat another user was experienceing the same exact issue as me out of the blue.
I also tested my pc with memtest, gpu artifact testing etc with perfect results. No thermal throttling. I should also note i had HWmonitor open and saw my ram usage go from 60 to 100 during the lag spike. This happens everytime i try to play. I get no error meggage other than windows saying not responding.
Edit: Tried again today hoping to get more than 5 min of game time in and same issue, got this error code BeamNG.drive 0.24.1.1 0xC0000409 STATUS_STACK_BUFFER_OVERRUN