How do I start troubleshooting this?
You connect to your hub, and don't log in, but click "check router status". Post the contents of the tabs titled Downstream, Upstream, Network log in replies here as formatted text (not images, or links to images), ignore any "correct highlighted errors" messages. One of the forum regulars will take a look for any obvious power, error to noise issues, and suggest further steps.
You can also visit Thinkbroadband.com create an account and set up a Broadband Quality Monitor, which will continuously monitor your connection (so long as your IP doesn't change) and provide a useful chart of latency and any packet loss.
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