Thanks for posting to let us know that your connection is restarting, I apologise for any inconvenience caused.
I have tested things from here for you and I can't see anything out of the ordinary, no errors or time outs inside the Hubs logs and all of the power levels are within the preferred ranges.
Are you still having these issues? If so, please respond to me here with a recent copy of your Hubs logs, you can find these by opening your internet browser and typing 192.168.0.1 into the address bar, before you log in, in the top right hand corner it will say 'Router Status' click there and all the information needed is inside.
Also, how are you connected wired or wireless?
Is there any noticeable changes to the Hubs light sequence when the connection restarts?
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