So a bit of a conundrum here. In game, my brightness likes to randomly change (darken) then will brighten again. I checked the screen saver/display dim, and that wasn't it.
Seems to be a conflict somewhere, maybe in my graphics card overriding and darkening in game? It lasts like 3-5 minutes at the brightness I like before it overrides. After that it's hit and miss on dark/bright. Makes it a little hard to see those pesky Axis soldiers!