New router causes freezing of media while playing?

Well, like the fact that my new myN900 router gives me 7 ports.  But ever since I plugged my MBL duo, and my world adition white light to it I’m trying to stream video from both with my wd live streaming media player.  It goes for about an hour, then freezes altogether.  Will eventually unfreeze, but play back is still choppy.  All devices have the latest updates, and I’ve checked to make sure all cords and ports are securely connected.  What else do I need to do?  Have a good mind to send this back, as the performance is not what was advertised.

Are you using a wired or wireless connection for the SMP?

Wireless, and my linksys EA4500 never gave me this issue.