Try putting -malloc=jemalloc_bi in the launch options
Fixed crashes ingame for me, only problem im still facing is that when disconnecting from a server Arma says go fuck urself and crashes my pc if not runned in windows mode
Alot of people are getting a "Connection Failed" message when trying to join server 1.
All i can say is you are not alone. Staff are looking into it and we just have to wait and see.
Thanks
-Martin