I've been using a Deco E4 mesh wifi system for over a year and it has mostly been very good and provided better, more reliable wifi than the previous virgin Hub (in modem mode). I recently upgraded to the Hub 5 and set it up in modem mode, as per the previous model. It took some messing around but evnentually I got it work and it has been ok for a few months.
However, a few days ago I noticedsome lagging when my son was on his XBox and I was on a Teams call. I did a speedtest.net and it came back at ~80mbs rather than the usual 800+ on my wired connection. I called Virgin and, after waiting 10 mins to speak to someone, I had a frustrating 90 minute phone call where I was asked the same question repeatedly, had to wait o hold for several minutes (often without explanation so I wondered if the operator was coming back), and ultimatley was told that the router was receiving over 1000mbs so the problem was my end. I complained and was put through to the manager but then had to answer all the same questions and was told the same things. I eventually had to hang up as I needed to go into a meeting.
I used this forum and followed all the advice on things to try, partiularly from jbrennand on the order to bring your equipment up. Unfortunately, this didn't work for me. I then followed the advice that I should be using Cat6 cables instead of my Cat5e cables. I bought a couple for £10 on Amazon and they arrived yesterday. They solved the problem and I immediatley have speeds back to normal on all my devices.
I still don't know what changed for me to have to replace the cables but I'm glad it worked. It would have been helpful if Virgin had brought this up
