Edit--sorry misread the OP thread 🙂
I have the M200 and get 210+ on Wi-FI but I dont use the Hub3 but instead a BT mesh kit.
But even with the Hub3 Wi-Fi thats very low so maybe post the power levels here and someone will come along and assist.
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M200 Oomph - 5GB SIM + 3 extra SIM family plan - BT whole Wi-Fi - Sky Q
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Don't cry over Virgin price increase instead speak to retentions team and negotiate a better deal.