Screen dims when light sources go offscreen

[zool]

I fixed it! Oddly enough this issue seems to be monitor related. I was wondering if my monitor might be dimming to adjust to the darker picture when I looked away from a light source. So I started messing with the settings.

I have an LG W2286L monitor. I installed the LG forte manager program that came with the monitor, and turned the brightness up to 60. (And adjusted the gamma settings in game to make the dark, dark) The game now works great.

Those users who solved this issue by running in windowed mode might try playing around with their monitor's settings to see if they can get it working correctly full screen.