Not necessary if you just did a soft reset, as the soft reset doesn’t touch the radios.
That’s good. Some people set an IP address on the Hub that’s inside the router’s reservation table, and trouble ensues.
It also sounds like you might be powering the hub via PoE. That is known to cause problems due to voltage fluctuations.
See this thread if you are using PoE. PoE and the C8 (with extensive testing)