Netgear Orbi slow to reconnect

So I have the Orbi RBK50, I've had it about 4 years at least. I have one satellite attached and about 29 devices attached also. So here is my problem and I would like to know if the router might be dying? When I log into the ip address on the home computer I go to do the reboot, however the last time I did this it took about 10 minutes before I was back online, half of which the devices were not able to even connect to the router it just glowed blue. With that said, the main part of the router is connected to the cable modem and then one satellite upstairs where a few more devices are connected to the ports in back. Even the ethernet takes awhile to connect, longer than WiFi does, any suggestions please let me know. There is no new firmware update either. Thank you