Hi,
same problem for me and other friends.
Some players and me post on Bohemia forum : http://forums.bistudio.com/showthread.php?192474-Constantly-crashing-since-the-update

I play Stratis Westland.
Random crash after 5/10/15 minute
No crash for the moment in Poney helicopter( one hour fly).

Me and my friend as this problem at exactly the same time(same server).
Screen block, no error message , Cpu and internet work like if i played.
All computer block, i must kill arma3 process.
This time i must reboot the computer because my desktop and icon disappear.

Video Driver up to date
No problem before this update.