You can connect the two routers using a bridge mode without risking performance issues. Bridge mode disables the modem's NAT while allowing a router to function as a DCHP server without the need for a Netgear Router IP address. To learn "How To Set Up Netgear Nighthawk Bridge Mode," read the entire article and then follow the steps to properly set it up. I hope your Netgear Nighthawk Bridge Mode is configured properly. If you have any problems after following all of the measures and would like to speak with a technician, you can do so via Bellen Netgear Nederland.