Cablevision (Optimum) thwarts effort to mitigate the 300 intervals of dead time between pitches.

Cablevision (Optimum) DVR fast forward is crude, lacking what Verizon provides: skip forward 30 seconds. THURSDAY, AUGUST 25, 2016

Most specifically, the problem is not the commercials during sporting events. It's the dead time between plays, especially the 300 intervals of dead time between pitches in a baseball game. You've got to skip at least 10 seconds or try to get by with skipping 30 seconds and watch the next pitch right away. It's the only civilized way to watch a single baseball game.
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