Need guidance on slow Wifi speed - logs included

Installing and Using OpenWrt
1

I have OpenWrt installed on my TP-Link Archer C7 v2. Was trying to diagnose slow wifi speeds and blamed it on the range extender, but I unplugged the extender and the wifi to the main router is still slow- like 20-30 MBPS (I'm getting 300 MBPS from the modem on Comcast cable service)

I ran some recommended commands in putty to help you help me. Let me know what other info I can provide

root@OpenWrt:~# uname -a
Linux OpenWrt 5.4.143 #0 Tue Aug 31 22:20:08 2021 mips GNU/Linux

root@OpenWrt:~# cat /etc/config/wireless

config wifi-device 'radio0'
        option type 'mac80211'
        option channel '36'
        option hwmode '11a'
        option path 'pci0000:00/0000:00:00.0'
        option htmode 'VHT80'
        option cell_density '0'
        option country 'US'
        option txpower '23'

config wifi-iface 'default_radio0'
        option device 'radio0'
        option network 'lan'
        option mode 'ap'
        option ssid 'OpenWrt'
        option encryption 'psk2'
        option key '********'

config wifi-device 'radio1'
        option type 'mac80211'
        option channel '11'
        option hwmode '11g'
        option path 'platform/ahb/18100000.wmac'
        option htmode 'HT20'
        option cell_density '0'
        option country 'US'
        option txpower '25'

config wifi-iface 'default_radio1'
        option device 'radio1'
        option network 'lan'
        option mode 'ap'
        option ssid 'OpenWrt'
        option encryption 'psk2'
        option key '********'

root@OpenWrt:~# cat /etc/config/sqm

config queue 'eth1'
        option download '85000'
        option upload '10000'
        option qdisc 'cake'
        option script 'piece_of_cake.qos'
        option enabled '1'
        option interface '@wan'
        option debug_logging '0'
        option verbosity '5'
        option linklayer 'ethernet'
        option overhead '22'
2

Hope to not add confusion, but 11g isn’t that quick. Reference : https://www.lifewire.com/how-fast-is-802-11g-wifi-networking-818297

3

wow I didn't realize 11g was that restricted

should I turn off the 11g interface, to force the connection to use 11ac ?

4

Would be a start to assess the nature of the problem. My Archers C7v2 routinely give 150-180 (@5ghz) through some thin walls.

You probably also will want to check your network with something like wifiman (best on android) / airport (ios only).