I'm skeptical that this is a physical problem such as a loose connection. I've swapped out a few cables and no dice. How exactly do i set my monitor's refresh rate ingame? Also the monitors in question are the Samsung SyncMaster SA350 (1920x1080) and the SyncMaster 920BW (1440x900), with both running at 1440x900 resolution. My main monitor is the SA350 which the game plays on. EDIT: So I think i've found the problem thanks to your help. http://forums.steampowered.com/forums/showpost.php?s=0b1b6ffa3e8ffb42d195690f8d40d939&p=16263222&postcount=2 The value for "refresh" in my DayZ.cfg was set to '75', however my monitor's refresh rate was set to '60' http://windows.microsoft.com/en-us/windows/correct-monitor-flicker-refresh-rate#1TC=windows-7 It appears that when I set my monitor's refresh rate to 75 Hz, I get the same flickering problem that i had in-game in DayZ, except constantly even out of game. While i don't know how to solve that problem, changing the DayZ.cfg refresh value to '60' and leaving my monitor's refresh rate at '60' solved the problem. Anybody want to help clue me into why i might be getting flickering at 75 Hz?