Netgear C7000100NAS - DLNA video playback stops midway on my Vizio TV

I have been using the Comcast XB3 modem since one year and thought of swaping XB3 with C7000.

One of my main usecase is to stream local video files (all types eg.1080p and even 2160p, file size ranging 200MB to 15GB) from my Windows 10 PC to my Vizio TV. On the TV I would select the DLNA function to access this files. TV connected via ethernet and PC is connected to XB3 via wifi. With this setup I never had any issues during play back.

I setup C7000 and played a video and it played for approx 1 minute and stopped. Kept on happening. Not sure what the issue is. It some kind of buffering issue or some other setting specific to C7000 which is causing this?

If I not have a solution for this will have to return the C7000 and go back to using XB3.