[Brettiex]

As a user of V+ I experience this on several Discovery channels. This is a known poblem for V+ affecting lower bit rate channels.

If your using a standard V box then I would suggest you contact VM as there may be a problem with your box. I have never experienced this problem with my standard V box.

If your using V+ then I've heard that a code drop is expected some time in August. Hopefully this will address the problem as some have suggested.