I returned mine, it has the same video issue that the FireTv has, the issue is due the video player (exoplayer? and maybe the codecs used). Some others with Nvidia Shield seem to see the same issue. Appears to drop frames or something, specially on panning video and also fast action. Watch same video on RasbPi2 with KODI and it looks great.
I would like an "all in one" box, but for now will continue using RasbPi for local video and Roku for Netflix, Amazon, etc for now. Hopefully they will resolve issues in the future.