After router upgrade TV can't find Serviio

I just replaced my Netgear N150 wi-fi router with a Netgear N750 and upgraded speed to 200 Mbps ... now my DLNA connection to a Serviio server on my PC is unreliable and my Sharp Aquos TV doesn't see it anymore. Using my Samsung tablet and BubbleUp on wi-fi I can find and play media from Serviio OK. Using my Sharp Aquos, Sony Google TV, or Matricom Android TV all wired to the router I cannot reliably find Serviio, and when it is rarely found there are often no media folders listed. I tried switching the TV to wi-fi - no help.

This was ALL working perfectly before the router upgrade. Netgear tech support so far has been nonsensical.

Partial solution - now the Sharp Aquos TV finds the Serviio server but finds no folders or files. My Samsung tablet, Sony Google TV box, and Matricom Android TV boxes all find Serviio and can play media files.

The issue keeping all the wired boxes from finding Serviio (the tablet is wi-fi and always worked) was the Media Server in the new Netgear N750 router. It seems their Media Server is Enabled by default. The Media Server is part of their ReadySHARE function that provides for USB attachment of a drive on the network. I do not use this function so had not noticed it included its own Enabled Media Server called RealDLNA.

See "Sporadic detection ... " post for better definition of problem AND SOLUTION.