Playback problems HD files

I’m facing problems with my WD playing eg MKV files. The WD TV LIve is connected to my server via a Devolo 200mb network connection (via power socket, HD Proof). After a few seconds the image gets blurry and sound disapeares.

The Devolo devices are fast enough and checked this with other devices eg HDWMV steraming with xbox360, no problems at all.

Connectiong the HD WS Live directly via a network cable works however can’t have a cable in my livingroom and that’s why I purchased the Devolo solution.

Is there a solution at hand?

It may be a compatibility issue with the Devolo.  Check out WD TV Live’s compatibility list below.