Far too many uncorrected (post-RS) errors on lower frequency downstream channels, which would explain the poor speeds. Given the clustering around 130-180 MHz that's probably noise ingress on a faulty connector, cable, or could be a VM plant fault that's creating noise. It's unlikely to be a faulty hub. Low error counts on higher channels indicate the hub's recently been rebooted, so other than checking the coaxial cable connections to make sure they're properly made and securing nuts are finger tight there's nothing you can do. I'll flag this for the staff to advise.
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