On the router status page I had bad SNR levels, but I fixed it myself by rearranging some of the equipment. Specifically, when the cable splitter was resting on the floor it affected the SNR levels and re-positioning it made all the downstream snr levels go back to ~40dB
Why on earth would the cable splitter be resting on the floor surely it should be attached to the wall?
But to be honest it resting on the floor should not effect SNR levels unless there is a bad / loose connection make sure everything it thumb tight and connectors are firmly attached.
This is the poor quality of my Superhub 3 connection
Fault reported 09/2014 - Fault ticket raised 01/01/15 - Changed to 05/15 - Changed to 12/08/15 - Changed to 14/10/15 - Changed to 04/11/15 - Changed to 15/04/16 - Changed to 06/07/16 - Changed to 31/09/16 - Changed to 30/11/16 - Changed to 15/02/17 - Changed to 12/07/17 - Changed to 20/09/17 - Changed to 14/06/17 - Changed to 10/01/18 < 3 YEARS SINCE FIRST TICKET
However thanks to BT Fibre Broadband I can actually game without lag
Well done for finding it, at the moment downstream levels/SNR looking good
7.5 dBmV 7.9 dBmV 7.8 dBmV 7.8 dBmV 7.9 dBmV 7.8 dBmV 8 dBmV 8.1 dBmV 8 dBmV 8 dBmV 8 dBmV 8.3 dBmV 8.5 dBmV 8.5 dBmV 8.5 dBmV 9 dBmV 9 dBmV 9 dBmV 9 dBmV 9.3 dBmV
40.3 dB 40.9 dB 40.3 dB 40.3 dB 40.9 dB 40.3 dB 40.9 dB 40.9 dB 40.9 dB 40.9 dB 40.3 dB 40.3 dB 40.9 dB 40.9 dB 40.3 dB 40.3 dB
It does sound a bit of a liability though lol, if you would like an engineer visit to sort it please just ask.