Hello,
Thank you for reporting the issue.
We need crash dump files from this folder to analyze your problem.
C:\Users\<Name>\AppData\Local\Arma 3\
Can you upload somewhere in winrar package, please?
Archive smaller than 5000 KB can be attached directly to the ticket. For bigger archives, please use some free sharing service and post link here.

How to find correct crashdump file:
Try to make the crash happen
Look into crashdump folder
Upload crashdump with latest date in name (crashdump is rpt + bidmp + mdmp file with same name). Please try to provide as many crashdumps as possible, it helps us investigating the problem in a big way.

Thank you.

http://feedback.arma3.com/how-to-user.html

I've uploaded adam, think thats the right stuff

Hello,
it is possible that some of your hardware is corrupted and is causing trouble under a full load. It is also possible that you have not experienced this with other games, Arma 3 more performance demanding than most of the today's games. I would suggest to run a couple of heavy benchmarks to see if the problems occur as well.
The most suitable for you could be:
http://unigine.com/products/heaven/
http://unigine.com/products/valley/
http://www.memtest.org/
Please run these benchmarks (at least one hour each without interruption) at highest possible settings. Then you will see if your hardware is showing incorrect behaviour under heavy stress or not.
Thank you very much.

Hello, we are currently investigating the issue. Could you please provide us your dxdiag so we can make sure its not drivers related? You can find how to get your dxdiag file here:
http://www.matrixgames.com/forums/tm.asp?m=1597548