No wonder why you are having problems the stats in your downstream are outside if specifications, both power levels and SNR, you are going to need an engineer.
I have escalated to the VM forum team, one of the VM staff will be along in this thread to resolve it for you.
While waiting for somebody to come back to you can you go around and make sure that all coaxial connections to all VM equipment are finger tight best way is too loosen the connector and re-tighten, once done power off hub for 30 secs and back on, if the figures are still as bad then def will need an engineer.
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