Of course, I don't want to spoil your fun and if you find that feature helpful, thanks for the credits.
But as MCCC support team captain, I should warn you. We've seen a lot of confused Sim 4 gamers in our support struggling with especially this setting.
Adjusting the Game Time Speed (GTS) within MCCC settings is a feature that comes with some risks!
Anything in-game that uses a timeline or time-sensitive triggers - such as Seasons, holidays, and active careers - will not work as designed, causing gameplay issues and may even cause errors/exceptions in your game! That's because the core Sims 4 game doesn't support changing the game time speed, so anyone using that takes the risk on themselves that issues might happen.
MCCC has this setting for people who are interested in that feature, but it is not something we recommend for regular playing.
To change it back to the default 25, use this path on a computer:
Computer:MCCC > MCCC Settings > Gameplay Settings > Game Time Speed