hello ,
thanks for the fast reply .
i just did that ,
validate game cache 100% ok .
check arma .exe run as admin .ok
launch the game ... about 15mn in .. then freeze and crash again .
this time i had a nvidia drivers crash and recovery thingy .
so i rolledback to old nvidia drivers ... thought it maybe the drivers update the problems...
launch the game ... 30mn ingame random crash again .
back to latest nvidia drivers .
will check crash logs and upload new ones .
thanks

i will upload all my report logs as they happens .

good job !