I got 2 Asus VG248QE Monitors with a color management settings icc-profile. After or while playing dayz the overall brigthness is higher than normal. Not in Dayz but on my desktop and other applications (like chrome). It's like my icc profile is getting reset.
(Sorry for the german-settings, my OS is german)
On the second screen there is a checkbox "Eigene Einstellung für das Gerät verwenden", after unchecking and checking it again the brightness and color settings are changed to normal again.
EDIT: my settings: