1.Go to monitor’s OSD menu > System > USB-C configuration >
Change the setting from USB 2.0(default) to USB 3.0/3.1/3.2 Gen1.
2.Go to monitor’s OSD menu > System > Advanced > DisplayPort>
Change the setting to DP 1.1.
3.Hold the Option key on the Mac keyboard, click on the "Scaled" option,
and turn on the option "Show all resolutions".
4.After that, the resolution with HiDPI and 2560 x 1440 (default) option
will be presented on the MacOS
5.It is recommended to select the resolution with HiDPI or
2560x1440(Default) to improve the font blurry issue.