I've a Netgear WNDR4500v3 I use to route all the traffic of my home (2 rMBP, 1 iMac, 2 PS4, 1 iPhone, 1 HTC, 1 Epson Printer, 1 Philips TV and 1 Chromecast).
I used to live in an area where the max broadband was about 5 mbit/s and it never had a problem with it.
Recently I moved to an area where I have a 50 mbit/s connection and the problems started:
After few weeks the internet connection suddenly slows down and when I login into the router admin page the panel isn't responsive as it should be. Once I reboot the router, everything starts working normally again for the next ~2 weeks.
My router is connected to a ZTE modem/router that works just as modem (I have disabled every feature of it), this is the same configuration I had in my previous home (I had a Vodafone Station 2 with everything disabled).
I looked for custom firmwares but seems like the v3 is not supported by neither of them.
Ideas to fix the problem?