My wifi used to be faster, but it slowed down

[Trenix25]

I did a factory reset on my wifi systems and now I'm only connecting at 174 Mbps instead of 867 Mbps. I changed nothing on my Linux system. I changed the 5 GHz wifi from an 80 MHz channel to a 20 MHz channel. iwlist says the wifi offers 780 Mbps, but I can't seem to connect at that speed anymore. I ran a speed test through my ISP and the speed is way down. It used to get close to 240 Mbps downstream, but now it's around 50 or 60 Mbps and only 5 Mbps upstream. I have four layer 1 channels from my ISP and each channel provides 60 Mbps. I use cable Internet. I told the wifi to use AC/AN on 5 GHz to try to prevent a user from trying to use A instead to prevent a user from slowing down everyone else. It doesn't have an option to use just 802.11AC. I don't have AX. Does anyone here have experience with Wavlink wifi routers that may be able to help with this?

Signed,

Matthew Campbell

 

[Brickwizard]

Do you have access to the router? if so on the plate will be the router address [something like 192.168.1.25/] and a pass code, use these to enter the router management program, and look for the sync speed [this is the speed of the signal at the front end [off the street] now from experience I would expect there to be a 5-8% loss if connected via wire or 10-18% loss on wi-fi, if it is much greater than this i would check wi-fi drivers etc] it often happens that when you break a long-running connection with the ISP server [power cut, re-boot, reset] it will reconnect at a slower speed for a few days then go back to normal [my sync is normally 39.9Mb after a recent power cut it dropped to just over 30Mb and came back to full speed in 2 days]

 

[dos2unix]

What is the output of

nmcli dev wifi list

(This may have private info you don't wish to share).
But all we need is the MODE, CHAN, RATE and SIGNAL of the SSID you're to connect to.
There may be 2 or 3 lines for the same wi-fi SSID. Please include all lines.

You can hide the proprietary stuff like this..

nmcli dev wifi list | awk 'NR==1 {print $3, $4, $5, $6} NR>1 {print $3, $4, $5, $6}'

...and...

iw list | grep MHz | egrep 'dBm|disabled'

 

[Trenix25]

What is the output of

nmcli dev wifi list

(This may have private info you don't wish to share).
But all we need is the MODE, CHAN, RATE and SIGNAL of the SSID you're to connect to.
There may be 2 or 3 lines for the same wi-fi SSID. Please include all lines.

You can hide the proprietary stuff like this..

nmcli dev wifi list | awk 'NR==1 {print $3, $4, $5, $6} NR>1 {print $3, $4, $5, $6}'

...and...

iw list | grep MHz | egrep 'dBm|disabled'

I don't use nmcli. I use ifupdown, iwconfig, and iwlist.

4: wlan1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether (redacted) brd ff:ff:ff:ff:ff:ff
    inet 192.168.(redacted)/24 brd 192.168.(redacted) scope global wlan1
       valid_lft forever preferred_lft forever
    inet6 (redacted)/64 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::(redacted)/64 scope link 
       valid_lft forever preferred_lft forever

wlan1     IEEE 802.11AC  ESSID:"(redacted)"  Nickname:"WIFI@RTL88X2BU"
          Mode:Managed  Frequency:5.2 GHz  Access Point: (redacted)   
          Bit Rate:174 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:****-****-****-****-****-****-****-****   Security mode:open
          Power Management:off
          Link Quality=83/100  Signal level=51/100  Noise level=0/100
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Signed,

Matthew Campbell

 

[Trenix25]

Do you have access to the router? if so on the plate will be the router address [something like 192.168.1.25/] and a pass code, use these to enter the router management program, and look for the sync speed [this is the speed of the signal at the front end [off the street] now from experience I would expect there to be a 5-8% loss if connected via wire or 10-18% loss on wi-fi, if it is much greater than this i would check wi-fi drivers etc] it often happens that when you break a long-running connection with the ISP server [power cut, re-boot, reset] it will reconnect at a slower speed for a few days then go back to normal [my sync is normally 39.9Mb after a recent power cut it dropped to just over 30Mb and came back to full speed in 2 days]

The router is in my living room. It is in the same place it was before. I get a good quality signal from it, given that I'm in the next room. My desktop computer is in the same place too so the distance is the same. I own the wifi router. It connects to the router in the modem with an ethernet cable. I've had power outages before and this didn't happen. I think it has something to do with the factory reset of the wifi router and reconfiguration.

Signed,

Matthew Campbell