Hi Dale, thank you for getting back to us.
Having looked on our systems we are not picking up any issues what should be affecting the signal coming into your home.
I have been unable to confirm the speeds coming in through SamKnows as you are in router mode.
Are you able to remove the hub from router mode, and run the test again so we can identify if there is an issue with your hub, switch, cable, or computer?
You mentioned earlier in the thread you have been able to get speeds up to 600mbps when using an ethernet cable - was this on the same device as the most recent test was run on? Was this speed achieved when using your hub in Router or Modem mode?
All the best.
Molly