The biggest difference of the TV show versus the home game is the home game just ends whenever all the killers are found. The TV show has to reach a set number of episodes, so there are mechanisms built-in to make sure there’s always at least one traitor up to the final episode.
I guess it depends which version you watch; I think the U.S. and Canada versions are 44 minutes without commercials, but yeah, it does have some filler. When someone’s actually good at the strategy it can be interesting hearing them talk through their plans.