I have the "Disable for fullscreen apps" unchecked, but still whenever I put a movie in a fullscreen mode, flux disables. Please help, it huts my eyes and makes me angry.
Unfortunately flux can not be used during fullscreen mode. I have tried all alternatives, but none is able to do it, I guess it is too complicated.
This usually means that f.lux is using its emulated mode, and instructions are here to fix it: