I am sorry, you will need to point me towards a link on how to provide the details you have kindly requested.
In addition, as suspected, I test again this morning, straight to 20Mbps.
Also last night, circa 10:30 pm, It went from 0.2 to 20... like someone had flicked a switch.
Currently at 0.6 ish
https://www.speedtest.net/result/12245536263
https://www.speedtest.net/result/12245559361
If you can let me know how to find the data, I will of course supply it - at a time when I am experiencing the slow-down. Thanks 🙂