I also finally got a code on the crash message, which is the 0000000001 unable to INIT DXGI thing. I've been reading up online about it, launch option -cpucount does not seem to fix the issue.
Other options online include reinstalling the OS (not an option at the moment, but I'll get around to it). Any ideas?

Well, didn't need to wait long. It crashed again, same pattern, same problem, I was in the end sequence of a vault.
What else can I provide for you guys to help with this issue?

I tried this, I will monitor for a couple of days and see where come out. Will get back to you as soon as I know whether this did anything!

hey there,
well, it usually says "DayZ stopped working" and it has never recovered. When I move to close the game, it shows me the "Dayz has closed unexpectedly"-screen. I can try to let it run a bit on the next crash, but I'm pretty sure the game will not recover from that. So maybe it's a Freeze and then a crash?