speedtest-cli VS speedtest

That's a community cli client https://github.com/sivel/speedtest-cli rather than the official cli client https://www.speedtest.net/apps/cli

If you read the docs for Speedtest-CLI you will see that the program timeouts after 10 seconds. Try using this for default timeout of 1 minute and also redirect errors to the same file. speedtest-cli --timeout 60 >> /bin/speedtestoutput.txt 2>&1

Already exists https://github.com/sivel/speedtest-cli/, mature, stable, packaged in major distributions.

I recently installed OpenWRT on a TP-Link TL-WDR4300, and put the router of my ISP in bridge mode. Now I noticed that the wireless speeds are significantly slower (40mbps vs 3mbps via librespeed.org), after using OpenWRT.

LebreSpeed

Try hosting a DIY speed test on a cloud server (like Google colab or the free oracle instances or whatever):

https://github.com/librespeed/speedtest

here's the top two results if you search for "open speed test nginx reverse proxy": https://github.com/librespeed/speedtest/wiki/Reverse-proxy-with-Nginx https://github.com/henrywhitaker3/Speedtest-Tracker/issues/924

Or https://librespeed.org/

Fast.com is giving me ~ 250Mbps https://librespeed.org is giving me ~ 112Mbps the one constant between all the tests seems to be the 52Mb upload

It should be DIA. They provide the internet connection to the company since 2 decades and it's a very small ISP, so it's very vague in terms of contract. Iperf was giving me very terrible results with TCP, UDP was giving me a couple of Gbit/s throughput, definitely a wrong result. We are using this self hosted speedtest. All my results above are based on this software: https://github.com/librespeed/speedtest

Put a copy of Librespeed on a web server that's accessible through the VPN and told them to use that. For (our) convenience, it's logged into a database that's correlated with the VPN login/logout times so the users don't even need to log in to use it, but we still know whose test result it is.