@MarvinJ 

Thank you for the reply. Can you be more specific about the crash? Does the router lose internet access (e.g. internet light turns red)? Or the led looks normal but all the wireless devices disconnect from wifi? (What happens if you try to reconnect them manually? How about the wired devices?)

What's the model of your router? Does it broadcast 2.4GHz and 5GHz WiFi separately? Do you have any network extension devices as well? Please share your network topology here, we can help to look into it. 

Can you try to connect some devices to a guest network, then test if the problem still occurs when you connect the C110.