I’ve had a Sony NSZ-GS7 for about a year now. When I first got the device it I would stream with BubbleUpnp using my Nexus 4. It used to stream HD and SD no problem, but at some point in the last few months HD videos became unwatchable (constantly lagging/choppy). Since then I’ve done a factory reset on the Sony and on my Nexus 4 and this still hasn’t helped. I’m wondering what my next step should be? A factory reset on my router? I’ve tried streaming with Twonky Beam as well and have similar results. Any help would be appreciated. Thanks!