Recurrent internet drops at 10:00

[ColinTaylor]

I'm far from an expert on the subject, obviously, but from what I understand a CGNAT means that several users share the same public IP address. To allow communication with services outside the LAN, the CGNAT assigns different ports to each connection. Since the number of ports is limited, if all of them are in use new connections can be rejected. However, ports are released over time, so refreshing a page (like pressing F5 in a browser) may eventually work once a port becomes available?

It seems very unlikely as there are ways for an ISP to easily mitigate that potential problem. But anything is possible I suppose. I do still think this is likely an ISP issue though.