Same issue: mine crashes after around 20-30 minutes. It also crashes after leaving a server and exiting the server list; instead of bringing up the main menu, it crashes to desktop and says: DayZ has stopped working.

I'm also having this issue. I don't think it's because of cold as I had a lot of warm gear on and used heatpacks to make sure I was warm; I'll try to find a thermometer to check my temperature. I also thought that it might be because I had fractured my leg a while before, but using a splint didn't help the shaking at all. I also tried using painkillers, which didn't seem to help. I then tried charcoal tabs and tetracycline just out of curiosity; they had no effect. I also made sure I was bright green energized, hydrated, and healthy with no status effects.

In response to Dillpickle, this is not scope sway. The issue is crazy shaking of the scope. It's like that the character has a massive current of electricity running through his body.

The fire worked. I was kind-of surprised that the heatpacks didn't seem to have much of any effect though. Even so, it is a bit ridiculous how much my character shakes without the fire. I think shaking from the cold is a good idea, but I would only expect to shake that much if I was extremely close to freezing to death. I would also expect shaking to stop, or at least become controllable when I hold my breath.