its usually runs at 200mbs download and over the past week its been around 1-4mbs.. In the network log theres critical issues I believe this is the cause they look something like this:
No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Can you carry out a couple of speed tests at speedtest.net using a direct connection using a Cat 5E/6 cable between the Hub and a 1Gbs capable Pc/Mac/Chromebook and no other items connected.
Ensure that the Network Interface Card (NIC) drivers are up to date.
Then post the results on here.