Found by josu on forum & confirmed by i-loop & ronilse.

If you pause live TV stream on a network client for a some minutes & try to start it again, MP becomes very slow (CPU goes high) & you can't start the stream again.

h4. Steps to Reproduce
Start MP on a client computer, select MyTV & a TV channel, watch a show for some minutes & then Pause the stream. Leave it for some more minutes & then try to start (Play) stream again.

h4. Additional Information
This does not occur where the TV Server & client it's on the same computer (single seat).

Forum thread here:
http://forum.team-mediaportal.com/pause_function_live_tv_dont_restarts_after-t19475.html