the only thing i remember before it happened is that i was using a scope aiming at someone
it happened to me two days ago playing only with Exile mod on Tanoa
after it happened i decided to change the resolution back and forth to try to fix it
it crashed and the game launcher has generated a report. here is the link to the report
https://www.dropbox.com/s/hygm51zibuc37sg/ArmaReport_Log_20170205T193649_user.zip?dl=