If you connect ethernet to your Mi Box by USB dongle, you should have no issues. Most stuttering/freezing issues is with the persons WiFi connection, not the Mi Box. Ethernet will resolve all that.

I have the extend connected and both my Mi Box's play channels just fine. Have it set to 1080p 60fps setting in the extend.

Depends.

I have an HDHR Prime, and had a Mi Box. Playback was sometimes ok, sometimes stuttered, sometimes froze entirely.

Ended up replacing it with a Shield for this and several other reasons.

If you have one of the HDHRs with built-in transcoding, I suspect your experience would be better.

I have the HDHR Connect Duo and 2 Mi Boxes, both on wireless (5G) and playback is flawless both with HDHR app and live channels.

I don't have HDHomerun, but if all the Mi Box has to do is stream than it should be totally fine with no difference.

which HDHR you have? shouldn't be an issue with the Extend.

It's all dependent on your network/hardware setup. Do you have an AC wireless router? What HDHomerun are you going to use?

The HDHomerun Extend has transcoding hardware and will work with Wireless N. The other HDHomeruns need AC to work properly. I would recommend if you don't have an AC router to get one. Higher quality streams are going to need the bandwidth and (it seems right now) that most streaming boxes are foregoing ethernet ports.

The only other option would be to setup a spare computer with a good GPU and using software like MythTV, NextPVR (or the other multitude of options) to do transcoding. Then watch Live TV through Kodi.

I am using a HDHomerun Connect with a mix of Nexus Player, Mi Box, Shield TV, phones and tablets with no problems what so ever. I had stuttering/freezing issues with my N routers and chose to go with the Unifi AC Pro and now everything works great.

My experience is with the HDHR Prime. The MiBox does not deinterlace 1080i channels properly. This causes a jagged picture, particularly when watching something more fast-paced movement, like football or basketball. 720p channels will stream without issue. Different networks broadcast in different formats.

I've never used a Shield, but from what I've read, it has the horsepower to properly deinterlace 1080i.

I have a HDHR Connect Quatro and use both a Shield and a MiBox. No issues with either using Live Channels or the HDHR app. The Shield is wired and the MiBox is wireless (using 5GHz AC).

The Mi Box has lousy TV deinterlacing. It really is terrible.

If you use the Live Channels App it produces half motion deinterlacing, which is no good for sports or fast action viewing and if you are viewing 1080i H264 TV it will stutter when panning about video.

I am talking about Interlaced TV 1080i - video playback here NOT 1080p which is progressive. Yes it makes a difference.

Interlaced mpeg2 produces blocky picture outputs vs what your TV or other decent deinterlacing capable media players output. Most people would not know what to look for regarding properly deinterlaced TV - full motion video output from a media player if it hit them over the head.

Basically AVOID the Mi Box for anything to do with OTA interlaced TV.

The NVIDIA Shield and Mi Box also have issues if you use Kodi Krypton PVR's. Basically that combo is broken as well.