At random intervals, the global illumination (brightness) effect of the NVGs will turn off. The green coloration and noise effect remain, but the screen becomes as dark or darker than the night. This often affects multiple players on the same server simultaneously, but it can also happen to one player and not happen to another. This may happen once a night or several times in the course of a few seconds.

WORK AROUND: You can fix the issue by aiming down the sights of a gun after it has happened. The issue may happen while you are aiming down your sights. If this happens, lower your weapon and do it again. Equivalent control inputs (raising hands, melee weapons or other objects) does not work. Turning the NVGs off and then back on also fixes issue, but takes longer.