Both my wife and I have a Surface RT and we stream all the time because we cut the chord over a year ago, we also do it at the same time over wireless and neither of us get choppy video. You could try to do a factory refresh and see if that helps, if not you may have a hardware issue. If that's the case at least you just got it so you can exchange it.
Sent from the SurfaceForums.net app for Windows 8
