Acer Answers

GN246HL 1920x1080 @144 Hz resolution

There are several requirements needed to run this monitor at 1920x1080 resolution at 144 Hz:

Make sure your video card supports the 144Hz refresh rate.
Set the resolution to 1920x1080 @144Hz.
Set the monitor to 2D mode.
Make sure you are using a Dual-link DVI cable, which supports 56-144 Hz (2D) and 56-120 Hz (3D).
Make sure you are not using any switches, splitters, adapters, or converters. The DVI cable must be connected directly between the PC and the monitor.