Bonjour à tous,

I have a problem with my wifi connection which is annoying.

Material: MacBook pro (15 inches, 2019) macOS Big Sur (but the problem is present since a while, not related to the version)

The problem:

From time to time, when there is a small download spike (I open a new web page, I open a youtube video...), the connection suddenly stops and comes back after 5-30secondes. Typical example bellow:

64 bytes from icmp_seq=18004 ttl=116 time=49.686 ms
64 bytes from icmp_seq=18005 ttl=116 time=43.058 ms
64 bytes from icmp_seq=18006 ttl=116 time=41.639 ms
Request timeout for icmp_seq 18007
Request timeout for icmp_seq 18008
Request timeout for icmp_seq 18009
Request timeout for icmp_seq 18010
Request timeout for icmp_seq 18011
Request timeout for icmp_seq 18012
Request timeout for icmp_seq 18013
Request timeout for icmp_seq 18014
Request timeout for icmp_seq 18015
Request timeout for icmp_seq 18016
Request timeout for icmp_seq 18017
Request timeout for icmp_seq 18018
Request timeout for icmp_seq 18019
Request timeout for icmp_seq 18020
Request timeout for icmp_seq 18021
64 bytes from icmp_seq=18007 ttl=116 time=15194.851 ms
64 bytes from icmp_seq=18008 ttl=116 time=14254.444 ms
64 bytes from icmp_seq=18009 ttl=116 time=13280.943 ms
64 bytes from icmp_seq=18010 ttl=116 time=12325.614 ms
64 bytes from icmp_seq=18011 ttl=116 time=11640.797 ms
64 bytes from icmp_seq=18012 ttl=116 time=10673.107 ms
64 bytes from icmp_seq=18013 ttl=116 time=9684.535 ms
64 bytes from icmp_seq=18014 ttl=116 time=8715.744 ms
64 bytes from icmp_seq=18015 ttl=116 time=7746.596 ms
64 bytes from icmp_seq=18016 ttl=116 time=6771.457 ms
64 bytes from icmp_seq=18017 ttl=116 time=5776.254 ms
64 bytes from icmp_seq=18018 ttl=116 time=4787.126 ms
64 bytes from icmp_seq=18019 ttl=116 time=4096.986 ms
64 bytes from icmp_seq=18020 ttl=116 time=3220.105 ms
64 bytes from icmp_seq=18021 ttl=116 time=2283.508 ms
64 bytes from icmp_seq=18022 ttl=116 time=1473.911 ms
64 bytes from icmp_seq=18023 ttl=116 time=670.592 ms
64 bytes from icmp_seq=18024 ttl=116 time=522.966 ms
64 bytes from icmp_seq=18025 ttl=116 time=287.898 ms

The solution that I found was described in a previous post (here: Network connection timeouts on MacBook Pro). The solution was to remove files from the systemconfiguration (Library/Preferences/SystemConfiguration/):

- com.apple.airport.preferences.plist  
- com.apple.airport.preferences.plist-new
- com.apple.network.identification.plist
- NetworkInterfaces.plist  

But this is a temporary solution because the problem comes back and back... it becomes unbearable.

Before removing the files (during a download, you can see that the connection is completely frozen suddenly and comes back):

enter image description here Ping in millisecondes for the 940 first ping requests during a download 1-2Mo/s

After deleting files from Library/Preferences/SystemConfiguration/ ((during the same download):

enter image description here Ping in millisecondes for the 940 first ping requests during a download 1-2Mo/s after deleting files from Library/Preferences/SystemConfiguration/

So it works well on the moment, but the problem starts to appear again after 1h-1day. Apple or a program does something but I don't know what.This problem only occurs with my home connection. This problem did not appear at the beginning but about 6 months ago (I live in my new house since one year)

I don't have a problem anywhere else. You might think it's from the wifi but I only have this problem with this Mac.

So I don't know what to do except to erase and restart; but I think by using my time machine the problem will appear again.

So if anyone has an idea of what I can do (because I'm running out of ideas now), I would be very grateful

Thanks in advance for your time and your answers :)

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