I just purchased a N750 and what a nightmare.
Initialy I had a Motorola cable modem connected (ext IP) to a Vonage VDV22-VC (192.168.16.1 DHCP enabled) to a N750 (192.168.15.1 DHCP enabled).
When I plugged everything in, it all appeared to work.
Then I tried to use my WD mini to stream some video and my stream server did not appear (win 7) so I tried to remote desktop to it and no connection.
I rebooted the N750 and still the same problem. Then I noticed my wifi stopped working with my laptop, then the other desktop.
Rebooting appeared to have resolved some of the issues, but only temporally.
I called WD support and after about 30 minutes of troubleshooting, it was recommended I switch to AP mode. I thought this resolved my issue but this morning the 1 box that uses a static IP address stopped working.
I could not do a DNS lookup nor ping the gateway. I switch it from a static IP address to dynamic and it started to work. I had to leave so I’m not sure if it’s still operating
My preference is to use the N750 as a router so I can get the features I purchased it for.
Any advice would be greatly appreciated.