During last period I was monitoring my "Transfer File Speed" and I used Activity Monitor - Network Tab to view my network statistics etc...
I found that Activity Monitor (Mojave, Catalina) doubles the "Data sent/sec" numbers and it also adds a few MB/sec on top of that!
Please can you also try to copy a file over network and look at Data sent? Or can you try to do a speed test over internet and look at the Data sent/sec number?
For example during my Internet Speed Test I had 20Mbits/sec of Upload (https://www.speedtest.net/ and this value is correct ) but Activity Monitor showed 5-7MBytes/sec (so It was equal to 40-56Mbits/sec)...
Searching Google I found this website https://thehouseofmoth.com/apple-has-been-lying-to-me-for-years/ and this guy had the same problems.
Here another guy with the same issue:
apple.stackexchange.com
Please can you check your Activity Monitor Network Tab? I would submit a bug to Apple.
My MBP is connected through WiFi 802.11AC (1300Mbs Rate).
P.S. I see also that “netstat -bI” command shows the same bug in output packets/bytes counter...
I found that Activity Monitor (Mojave, Catalina) doubles the "Data sent/sec" numbers and it also adds a few MB/sec on top of that!
Please can you also try to copy a file over network and look at Data sent? Or can you try to do a speed test over internet and look at the Data sent/sec number?
For example during my Internet Speed Test I had 20Mbits/sec of Upload (https://www.speedtest.net/ and this value is correct ) but Activity Monitor showed 5-7MBytes/sec (so It was equal to 40-56Mbits/sec)...
Searching Google I found this website https://thehouseofmoth.com/apple-has-been-lying-to-me-for-years/ and this guy had the same problems.
Here another guy with the same issue:
Accuracy of "Data Sent/sec" in Activity Monitor on MacOS Catalina
I have a 2018 MacBook Pro i7 running MacOS Catalina 10.15.3. I'm uploading a 4.88 GB video to YouTube, using the YouTube Studio web interface in Google Chrome 79. My MacBook Pro is connected to my ...
Please can you check your Activity Monitor Network Tab? I would submit a bug to Apple.
My MBP is connected through WiFi 802.11AC (1300Mbs Rate).
P.S. I see also that “netstat -bI” command shows the same bug in output packets/bytes counter...