I am facing an abnormal issue in tp link firmware which I discribe in my last thread. I am facing less wifi coverage issue after the update and due to that reason I have to use my 2.4g connection 20 mhz to get some extended coverage. And I have a PC which does not support 5G wifi and must have to use 2.4G wifi. and on 2.4G connection I got max 72mbps because of 20mhz channel width. And to get the issue fixed I wanted to use guest as a separate connection only for my PC. But I unable to find any option to change the channel width of guest network anywhere. It will be great if anybody assist me to find it. Thanks in advance.