This issue has been happening for me too, while playing cod i would notice that stable ping would stop working because i noticed my ping would go back to 15 instead of 20+ and when i try to log into router using 192.168.77.1 it will not let me. The internet still works but the router features are all disabled I have to keep restarting router just to get it to work again. I have a Bell modem/router homehub4000 and have the R3 set to advanced dmz, hopefully this gets fixed soon i have to restart the router everyday just to get it to work.