B3n1254

No, sadly you can bypass that and not deal with them and connect a second router anyways. What will happen is if you use that second router the modem will see it as a single address and treat it as a single device. Remember to set your ips differently. If your root is 192.168.1.1 change the other router to say something like 192.168.2.1 so the devices dont get confused on the network. Its a simple way to bypass their nonsense. 

Your router combo box is being overloaded with requests. What essentially is going on is because its trying to complete so many tasks at once the system goes and throws its hands up and gives in. What you need to do to keep the system up and happy is to separate these two systems and buy a separate router. Even that will relief the system to such a great extent that you may find your up time has improved greatly. So the long and short of it... Buy a router and save yourself more headache then what it's worth.