After playing the game for an hour or so the game crashes locking the PC entirely. Originally I thought it was a heat issue but monitorying heat seems that this is not the case. Also can happen after less time has passed. Usually preceded by frames locking every few minutes and then the game completely locks up along with the entire PC forcing a hard reset.
First experienced this on the early exp. build of dayZ 6.0 however it has persisted into stable.