I have Lenovo W530 with Windows 8.1, and it has that annoying feature which changes contrast depending on colors of application (both on battery and AC). I've found that this is quite common on Intel display card, but I use nVidia Quadro K2000M. I have every possible option for power saving turned off, and it still does it.
- Display brightness: 100%,
- Dimmed display brightness: 100%,
- Enable adaptive brightness: Off.
In addition system, drivers and BIOS are up to date.
Any idea what else can I try?