Troubleshooting • Re: Sudden unexplained measured Internet bandwidth reduction

Code:

pi@raspcondo:~ $ which -a speedtest-cli/home/pi/.local/bin/speedtest-clipi@raspcondo:~ $ /home/pi/.local/bin/speedtest-cli --versionspeedtest-cli 2.1.3Python 2.7.16 (default, Sep 20 2023, 07:59:17) [GCC 8.3.0]pi@raspcondo:~ $ sudo apt-get install speedtest-cliReading package lists... DoneBuilding dependency treeReading state information... Donespeedtest-cli is already the newest version (2.0.2-1+deb10u2).0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.pi@raspcondo:~ $ sudo apt-get remove speedtest-cliReading package lists... DoneBuilding dependency treeReading state information... DoneThe following packages will be REMOVED:  speedtest-cli0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.After this operation, 103 kB disk space will be freed.Do you want to continue? [Y/n] y(Reading database ... 169309 files and directories currently installed.)Removing speedtest-cli (2.0.2-1+deb10u2) ...Processing triggers for man-db (2.8.5-2+deb10u1) ...pi@raspcondo:~ $ sudo apt-get install speedtest-cliReading package lists... DoneBuilding dependency treeReading state information... DoneThe following NEW packages will be installed:  speedtest-cli0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.Need to get 23.4 kB of archives.After this operation, 103 kB of additional disk space will be used.Get:1 http://mirror1.ku.ac.th/raspbian/raspbian buster/main armhf speedtest-cli all 2.0.2-1+deb10u2 [23.4 kB]Fetched 23.4 kB in 1s (24.8 kB/s)Selecting previously unselected package speedtest-cli.(Reading database ... 169295 files and directories currently installed.)Preparing to unpack .../speedtest-cli_2.0.2-1+deb10u2_all.deb ...Unpacking speedtest-cli (2.0.2-1+deb10u2) ...Setting up speedtest-cli (2.0.2-1+deb10u2) ...Processing triggers for man-db (2.8.5-2+deb10u1) ...pi@raspcondo:~ $ which -a speedtest/home/pi/.local/bin/speedtest/usr/bin/speedtestpi@raspcondo:~ $ which -a speedtest/home/pi/.local/bin/speedtest/usr/bin/speedtestpi@raspcondo:~ $ /usr/bin/speedtestRetrieving speedtest.net configuration...Testing from CAT Telecom (110.77.146.212)...Retrieving speedtest.net server list...Selecting best server based on ping...Hosted by kirz (Bangkok) [8.10 km]: 28.831 msTesting download speed................................................................................Download: 64.05 Mbit/sTesting upload speed......................................................................................................Upload: 73.85 Mbit/spi@raspcondo:~ $ /usr/bin/speedtest --version2.0.2pi@raspcondo:~ $ /usr/bin/speedtest-cli  --version2.0.2