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The sound is annoyingly out-of-sync with the picture, so when you see people are speaking their lips don't match up with the words; like an old karate movie.
Are you using HDMI to connect the cable box to the TV? If so, look for a HDMI audio sync option in the TV. Also check if your TV has "Game mode" that will decrease delay in audio processing. Last, try if it happens OnDemand. If not, could be a issue with the signal for the station. Does it happen on all stations/channels?