Recently, Arctis brought in a new driver that allowed 'game' or 'chat' for the earphone.  It seems that even though you set 'game' as the default, arma3 seems to be using 'chat'.  This causes crashing, with ACCESS VIOLATION.   The solution is to disable 'chat' driver.  My arma3 has not crashed yet since doing this !  I hope this works for others.