Copying and pasting my post from the rasslin OT:
As we approach Wrestlemania, I want to let people in on what actually made the WWE Network work for me during NXT:
Network would constantly freeze and just not work and was unwatchable on every browser I tried (Edge, Chrome, IE, Firefox) on my media PC.
Downloaded the PS4 WWE network app during the first 5 minutes and it worked with only 1 freeze (for about 10 seconds), and dropped bitrate one time for about 30 seconds.
If it's failing on PC, try it on a console of any kind.