Um... I tried all 3 modes but didn't really see any difference with regards to flicker in Windows.Could the non-flickers have Variable Backlight: Mode 2 active? I noticed it's bearly visible in mode 2, but modes 0 and 1 have clear dark grey flicker.
Edit: Mode 2 seems to have a hidden bonus level: left and right side of the monitor flicker when taking cursor from edge to edge, has anyone succesfully used HDR on this monitor?
I've left it on mode 0 for a good while now and pretty much got used to the flicker. Might give mode 2 another shot...