So if you right click on your desktop and go to 'Display Settings' down to 'Advanced Display Settings' and then down to "Display adapter properties' and then select the tab for "monitor' the drop down box doesn't show you 144 as an option? what are displayed if not?
Also, just to make sure. Under the Advanced Display Settings, select Detect and then Identify, see if your Asus is the primary 'Number 1' Monitor.
I just double read your post, so your GPU does not have DVI ports just Display and HDMI so you are using a adapter to from y our monitors cable to a HDMI.
That actually might be the cause, HDMI unless it's the newer version is only 60 hrz.
You'll need a Display Port cable I'd imagine.