Recently I have been noticing the audio becoming delayed. It starts out fine but then becomes delayed 500 ms or so. If I stop the video and restart at the same place, the audio is fine ... for a while, then it becomes delayed again. Lately noticing it on 3D streaming, though 2D may also be affected. Is there a known issue and a solution?

Samsung 7 series
hard wire LAN connection
Mezzmo 4.1.2.0