Unfortunately, the quality of ASUS has severely diminished.
The monitor itself has a useful image for films. The picture is very stable viewing angles, there were no dead pixels and only minimal bleeding of LEDs. For normal work, especially with graphics programs good for any of the settings. While it is offered as a display mode with sRGB, but in my copy brightness and contrast were then fixed and not to be adjusted. So during the day to dark and night it has blinded.
By setting the "Custom" settings, I then spent a long time without coming to the end. Because on the third day of the monitor has (not the external power supply) started tweeting (very high unpleasant sound) and there was strong bleeding of the backlight from the bottom right over ca 1/4 of the screen.
Then, the monitor went back on the fourth day at Amazon, as always very intuitive!