Ok, i play Dayz 0.52 and before the ultimate 12 mb update, go well. Sometime crash but it's ok, after the update the game is really unstable sometimes i play 1 sec another time 1 minute or sometimes 1 hour.
I play other games, Far cry 4, Garrys mod, CoD advanced warfare, battlefield 4 and i have never have this type of problem.

Don't tell me update directx or video driver and bla bla bla. I try everything i can do, i want a really solution. Some dll fix or do something that can really help me.