Today I was playing DayZ and went to tab out of the game, when i tabbed back in the game switched monitors.
I was playing dayZ in fullscreen mode at 1920x1080x32 on my main monitor (display1 Generic pnpmonitor) and everything was fine.
I tabbed out using the Alt+Tab Buttons, opened my Nvidia control panel and turned my gamma up just a bit. Then I clicked on the dayZ icon on my taskbar to tab back into the game when the game opened up again from the backround it was in a window. (but on the correct main monitor) Pressing Alt+Enter put the game into fullscreen like it was before I tabbed out, but this time on my 2nd monitor (display2 acer h233h)
I wasn't able to get the game back into fullscreen on the correct monitor so I stopped playing as it was no longer enjoyable.
(restarting the game is not a viable solution for this problem, every other game in the world works just fine knowing what monitor to output to....)
Restarting the game I still have the same issue, Dayz is super confused about which monitor to fullscreen into.....................................