ASUS RT-AC88U + RCN Internet Disconnecting...

I have RCN 1Gig internet and an ASUS AC88U router. I am using an Arris Surfboard SB8200 as my modem. I also have an RT-AC68U acting as a node using AiMesh. I do not think this matters, but I will mention it. I have a separate MOCA network using my antenna. This wires back into the 88U router but is not using the RCN cables. Attached is a Visio of what my setup looks like.

Everything has been working great up until about a week ago where I will lose internet but the router and modem both...

ASUS RT-AC88U + RCN Internet Disconnecting...