FastBoot Mod for Minecraft 1.20.1, 1.21.1
FastBoot: Accelerate Your Game Loading Time
⚡ FastBoot accelerates game loading by using mixins overwrites during early loading stage, particularly for heavy-modded setups ⚡

FastBoot operates on a simple idea: in most cases, data conversion and processing for every game version is unnecessary, so FastBoot delays them. As a result, the game loading speed decreases
🎮 Tests
⚡ FastBoot helps to boost the game loading speed by 1.5x-2x times, compared to tests without the mod ⚡
🎥 Here's a video showcasing the mod's tests:
📊 Stats
A table with the game loading times for different versions of Minecraft with and without FastBoot:
Minecraft version Loading Without FastBoot Loading With FastBoot
1.16.x 15 seconds 10 seconds
1.17.x 28 seconds 10 seconds
1.18.x 24 seconds 8 seconds
1.19.x 16 seconds 8 seconds
1.20.x 17 seconds 10 seconds
1.21.x 19 seconds 11 seconds
🔧 Compatability
The mod works well with all other mods, including perfomance mods. FastBoot is fully compatable with OptiFine, Sodium, and other performance-friendly mods. However, because the mod does use some changes in game loading process: if you experience any compatibility problems, please leave a comment.
How to install FastBoot
With Millida Launcher
Install Millida Launcher
The launcher is free: download it at millida.net/launcher and sign in with any nickname.
Click “Install” on this page
The launcher opens and installs the mod for Minecraft 1.20–1.21.8 on Fabric, Forge or NeoForge automatically.
Launch the game
A profile with it appears in the launcher: click “Play”.
Manually
Install Fabric, Forge or NeoForge
The loader must match the game version of the mod file, for example Minecraft 1.21.8. After installing it, a separate profile appears in your launcher.
Download the file for your version
In the version list above, pick the file fastboot-1.21.x-v1.3neo.jar (9 KB) for your game version and loader.
Put it in the mods folder
The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.
Launch the loader profile
Open “Mods” in the main menu: FastBoot should be in the list.
Minecraft 1.21.8 runs on Java 21: with a different Java version the game may close right after launch.
Versions
With dependencies
| Minecraft | Loader | File | Date | Actions |
|---|---|---|---|---|
| 1.21 | NeoForge | fastboot-1.21.x-v1.3neo.jar8.9 KB 11 | ||
| 1.21 | Fabric | fastboot-1.21.x-v1.3fabric.jar36.1 KB 48 | ||
| 1.21 | Forge | fastboot-1.21.x-1.2.jar23.4 KB 14 | ||
| 1.20.2 | Forge | fastboot-1.20.x-1.1.jar23.9 KB 20 |
FAQ
Which Minecraft versions does FastBoot work on?
There are files for 1.20–1.21.8, 16 versions in total. The newest is 1.21.8.
Is FastBoot for Forge or Fabric?
There are files for Fabric: 1.21–1.21.4, for Forge: 1.20–1.21.4 and for NeoForge: 1.21–1.21.8.
Does FastBoot need other mods?
The author lists no required dependencies: the Fabric, Forge or NeoForge loader is enough.
Which Java does FastBoot need?
Minecraft 1.21.8 runs on Java 21. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.
Where can I download FastBoot safely?
On this page: the file fastboot-1.21.x-v1.3neo.jar (9 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 1c9101baf7e4b111fc55e0b5a8687e67be2f626c.
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