TickScale

TimeScale is a simple mod that gives you control over the game’s speed. You can slow everything down for a clean slow-motion effect or bring it back to normal anytime. It doesn’t just skip ticks, so everything stays smooth—movement, physics, particles, and even sounds all stay in sync.

You can change the speed using hotkeys or the /speed command, and if you don’t like the default controls, you can change them in the config menu through Mod Menu.