I currently have an issue. I have the Virgin Media Hub 4 and a couple of Linksys Velop Nodes. The Parent Node is connected to the hub 4, The last test I did got 829 down and 53 up. The coverage is around the house is relatively good, there are no connection drops and 5 bar connection. 2 days ago, I was getting around 150 - 200 download and very bad upload (barely 10). We noticed this and checked the settings, we decided to split the WIFI's just to test out something (2.4Ghz & 5ghz) just to test something, and for some reason not all of the nodes responded well to this. So every node except the living room had to be reset, I used the 5G wifi to connect them, it was all fine and good. Now I notice that I have extremely good upload speed (consistent 50), but sub-par download speed (50-70 mbps). We decided to join the WiFi 2.4 and 5ghz again just to see what would happen, and I still get the same speeds of 50-70 download and 50 upload.
I looked at an online forum, and the suggestion was to disable WMM from Device Priority, however it made both download and upload speed even worse (around 16 download and 16 upload).
What should I do? Would resetting the velop nodes and starting from scratch help or is there a fix?