Confirmed in vanilla arma3, no mods, escape from stratis
attached as BARON2Arma 3 Alpha.rar

I get this issue.
Multiple crashdumps and dxdiag here:
http://www.filedropper.com/baronarma3alpha

If any one thing caused the crash I would flag that but it is totally random. I can be driving, walking, shooting or standing still.
Oh, machine is not overheating either.

...and on objects once you have the stance right

I can't understand why they haven't put it in already, LMGs and Automatic Rifles are completely useless in any grass whatsoever if you can't deploy them on rocks, trees etc.
Don't understand why this isn't already in.

Although it did crash with the developer build previously, that was before some updates, and it hasn't crashed with the latest dev build recently.