Starting from the last a few days our home FTTC connection has been having persistent latency spikes that make video calls and remote working very unstable.
I noticed this in my remote desktop connection (RDP) to my workplace, where typing in an RDP window has a lag of ~0.5s, and the video calls in my daughters' remote learning sessions started to show cripped pictures and the voices breaking up frequently.
I am a software developer myself so I investigated the problem a bit. This is the latency spikes I've seen - very consistently throughout the day (from https://www.azurespeed.com/😞
Same picture from a different server (for a short span of ~10s, from testmy.net😞
The download/upload speed varies greatly between 20Mb and 50Mb, I guess also impacted by this instability of the connection. We have a Fibre 2 package which promised a speed between 50Mb and 80Mb, and at least a few months ago it was all perfectly working at speed.
I have obtained the above screenshots from a *wired* direct connection from the Hub - so there is no wifi or subnet issues here.
I have also
Reset the Hub and the problem persisted
Called 17070 opt 2 and there is no noise at all between the announcements.
Called BT FTTC and all the operator could do was to check that the connection is stable (which I agree, that they didn't "drop" for much more than a second).
Apparently I am now stuck - could someone from our great BT community shed some light on this? Needless to say my 4 and 8 year olds are very disappointed not being able to see/hear their teachers clearly while all her classmates have no issues doing so.