I have an Asus F510UA laptop running Windows 10 that I use on a daily basis. One of my major gripes with it is that whenever I go on battery power and view content that has a dark background, like VS Code, Intellij Idea, YouTube in dark mode, etc. it looks like the screen gets darker, even if my brightness is set at 100%.
I believe this is the case because whenever I then switch back to a bright website, (or in general away from the dark content) the screen brightens again after ~10 seconds. I don't think this is an optical illusion, however, I could be wrong.
My immediate thought is that when on battery power, Windows is doing some funky magic with the power plan that allows it to turn the screen brightness down, but I can't seem to find any setting to let me turn it off. Does anyone know what is happening here?