A:Answerthe 1440 will be a setting on your computer to change the resolution. to get the 144hz refresh rate you must use the physical button that is on the monitor underneath the Samsung logo and go in to the settings and change the refresh rate to 144hz on the actual monitor itself.
A:AnswerHave you tried changing the settings on the monitor to 144hz? The monitor comes default at 60hz and I had the same problem on pc until I used the monitors settings and changed it to 144hz.
A:AnswerThe original Xbox one is capped many times at 30fps and sometimes 60fos on shooter games. So even if you use this monitor and a HDMI 2.1 cable you are not going to get 120fps or anything above 60fps. While the monitor is capable of 144hz the console is not capable of anything above 30fps or rarely 60fps
A:AnswerThis is not possible with the stand that comes with the monitor, but it is possible if you buy a mounting arm (either to the wall or your desk).