Try a 60 second factory pinhole reset as below; Remove any ethernet cables from the Hub and hold the pinhole reset switch for 60 seconds. Do NOT reboot the Hub, just let it do it's thing. Note you will need the passwords from the bottom of the Hub afterwards, so make sure they are legible.
I believe there was a previous post saying VM have fixed the SamKnows problem recently. It may help the speed problem as well.?
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Please make sure you are only posting once about your issue. If you need to update the thread then just reply to your original thread rather than creating a new one. We understand it's frustrating when something's not right however posting more than once about the same fault makes the boards look busier than what they actually are. It also means we could take longer to reply due to needing to sift through duplicate posts.
Have a look at my reply on the other thread and stick with that one so we keep all the information in one place.