Hello,
we are sorry you are experiencing issues with our game.
Are you running any mods? If so please try to disable them. Should the problem occur again, please export your game log files from the launcher (again, without any mod).
The mdmp + rpt + bidmp files should be located in this directory:
C:\<username>\AppData\Local\Arma 3
Attach the generated files to the ticket. If the files are too big please use some free file sharing service.
Thank you