So after the new update people have been crashing left and right and it would normally happen inbetween 1-2 hours of gameplay after exiting a vehicle,dying, and doing an action, then bamf told me to do this thing it might fix your game, and it did so i'm sharing it and I hope it fixes for everyone else. (don't do this if your game isn't crashing)
So this is how:Open up your ARMA launcher, go to parameters click ALL PARAMETERS find "Memory allocator" put a check in the box and choose "JEMall