I've been using this line for years, streaming/gaming an for the last week my upload speed has been very unstable, I haven't been able to stream at all, I've had 3 techs visit me in the last 5 days an the problem hasn't been resolved, I have the 400/20 service but my uspeed is all over the place, especially when I'm trying to stream, its just unwatchable, at first I thought it might be from my end but after hard wiring to my modem, had the modem changed twice, trying different pcs, I was convinced, so I went to my aunts house 5 mins up the street with my streaming rig an did a couple test (obs streaming app) , it was buttery smooth like it usually is for me. heres some screenshots, what do you guys think?
My line, hard wired to modem (E31U2V1)
My aunts line to modem Spectrum 200/10 (TM1602)
Tests from my line