I'm still having this problem. It's not happening to other files.
I even replaces my router to address bandwidth and speed issues.
I'm on windows. I get about 2 seconds of video before it crashes back to the load video and the TV just shows the logo.
MKV files are playing super choppy. I'm getting buffering ever few seconds. I've dropped the quality all the way down and I still get buffering every few seconds. Other file types are not doing this. Let me know if I can help in any way.