A faster countdown could help improve patience of people
People are more patient when exposed to faster countdowns - short science articles and news

Researchers have found that time flies i.e. people become more patient when subjected to a countdown clock. They tested it on video game players and found that the speed of the countdown influenced the patience and decision-making both during and after the game. Participants were more patient when the clock quickly counted down the remaining time instead of when the clock slowly displayed the countdown. They hypothesize that a faster countdown could subconsciously indicate that the time is passing by faster and it could encourage deliberate decision-making. What's more interesting is that this could not only help manage a person's emotion but also help them make better decisions.

Read the full story: Penn State
Scientific publication: Timing & Time Perception