Same here.. doesn't matter map, single player, multiplayer, regular patch release, dev release - it crashes anywhere between 5-20 min after the patch release this past week.
Dude... Have you even looked through the forums?? Everybody is crashing.
Rule # 7) Search before posting
If you have a question, please use the forum search function before posting to make sure that it hasn't been answered before. There is a big chance it has, not only does searching help to keep the forum free of multiple threads it will also help you to get an answer much quicker.
---------- Post added at 07:25 ---------- Previous post was at 07:22 ----------
http://forums.bistudio.com/showthread.php?150907-PhysX3_x86-dll-Crash/page14
http://forums.bistudio.com/showthread.php?165628-Constant-CTD-ARMA3
http://forums.bistudio.com/showthread.php?165614-Game-freze-and-crash-after-a-few-mins-playing-after-update
http://feedback.arma3.com/view.php?id=15009#c56050
http://feedback.arma3.com/view.php?id=12784
http://feedback.arma3.com/view.php?id=15062