Internet stops working for about a minute randomly on Wifi.

[tonyr6]

I am having a real annoying problem with Wi-Fi stop working for about a minute. It will just go dead on my 16" MacBook Pro. I am worried since it is refurbished from Apple that the Wi-Fi might be defective. I am on Big Sur but it also did it with Catalina. I did all those resets SMC, PRAM if I did them right or not I don't know. I even bought an Ethernet adapter which I use when doing video calls. It can stay sometimes connected for days than other times it will randomly stop working for about a minute. If I plug it into Ethernet it works.

Also, I am running a Netgear R7000 running FreshTomato on Wi-Fi 5G WPA2 Personal channel 153 with 80 MHz with? So does it sound like a hardware failure or are other people having the same issue?

 

[BradleyRoss]

Open the Activity Monitor application and go to the Network tab. This will show the number of bytes per second coming in and out of your operating system. See if you see anything on that window or the CPU tab when the problem occurs.

Another thing that you do is to use Wireless Diagnostics. https://osxdaily.com/2012/07/31/wi-fi-scanner-mac-os-x-mountain-lion/ (Hold down option while clicking on wireless icon in top bar, and then select Wireless Diagnostics.) Create Diagnostics Report is also useful. Report will be a tgz file in /var/tmp. One problem may be that the WiFi Channel that you are using may be congested. If you look at CoreCapture/wifi_scan.txt to see who is using the various WiFi channels. This will be done in the setup on your router. https://www.metageek.com/training/resources/why-channels-1-6-11.html

This also looks good https://www.imore.com/how-use-macos-wireless-diagnostics-get-best-possible-wifi-settings-your-area