Xfi Gateway Modem causing drive connection issues/dropping

Hi,

I've had some issues since switching to the Xfi Gateway modem. I have a PC-based media server that plays video files from a network shared drive via ethernet attached to a TP-Link unmanaged switch. Everything worked fine when it was hard wired my old Wi-Fi router, however after upgrading, my video files would freeze about 10 to 20 minutes of playing and then stop. If I disconnect the switch from the router, everything plays fine, so it has something to do with the Xfi.