The biggest thing that makes me nuts about our speedtest regimes is that we test upload and download separately, rather than at the same time. People have 16+ wifi devices on their networks today. There IS upstream traffic going on at the same time, most of the time, and what happens when one side or the other also saturated or merely in use is widely misunderstood. For example a short packet fifo on the uplink starves the downlink, which you can see from Oleg´s recent starlink rrul tests here: https://olegkutkov.me/2024/02/12/starlink-terminal-revision-...

If more of our tests tested up + down + latency - and ISPs and users deployed bufferbloat fixes like fq_codel, cake, and libreqos.io - the internet would be a lot less jittery and feel a lot more fast, all the time.

https://blog.cerowrt.org/post/speedtests/ has some ranting. More ranting about saner uses for fiber here, also: https://blog.cerowrt.org/post/towards_better_broadband/

So the nutrition label scheme is seriously flawed without testing up+down.