@Tommy_HK
Also without knowing what type of devices are connected to the other end of the Archer AX50, it could be the devices' network adapter is limited to 10/100 too, as the other poster has mentioned, try a using a cable that is cat 5e.
As a suggestion for capturing screenshots from the desktop:
- Mozilla Firefox browser has an inbuilt function to grab a screenshot of a webpage. https://support.mozilla.org/en-US/kb/firefox-screenshots; it is super useful!
-Since you are using Chrome; you can also install add-ons/extension to achieve the same thing.
- Windows 7/10, also has an in built program, "Snipping Tool / "Snip and Sketch" that can also help grab screenshots of your desktop or application program window(s).