I'm having the exact same issue I'm on the 500/70 package with BT, downloads are just over 500 uploads are anything between 35 and 50 and quite erratic, during the test, rather than a steady number, on the Think BB speed test the analysis says my upload quality is as low as E (mostly better than that though)
I've connected directly to the hub, removed the hub and used Nest Wifi, changed cables, all the same. I reported it to BT yesterday and a telephone engineer randomly turned up today a bit puzzled as he was sent to check my telephone line but nothing about FTTP.
Edited by deleted (Thu 01-Apr-21 15:46:18)