Retro FastSuite
Java mod listed for Minecraft 1.12. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthRetro FastSuite improves recipe lookup performance in large Minecraft Forge 1.12.2 modpacks.
The mod builds a conservative index of loaded recipes and uses it to skip recipes that cannot match the current crafting grid. Recipe matching itself is still performed by Forge: IRecipe.matches() remains the final authority, and recipes that cannot be classified safely stay on the normal fallback path.
This keeps recipe order and crafting behaviour intact while making broad lookups and failed matches much less expensive.
Compatibility
- FastWorkbench
- Universal Tweaks Crafting Cache
- RetroPolymorph (WIP)
Performance
The bundled benchmark was run against 24,325 loaded recipes. Times below are the average per lookup in microseconds; lower is better. Results depend on the modpack, JVM, hardware, and lookup pattern.
| Workload | Retro FastSuite | Vanilla scan | Speedup |
|---|---|---|---|
| All matches: acacia planks | 520.19 µs | 7,743.59 µs | 14.89× |
| All matches: sticks | 567.16 µs | 8,343.35 µs | 14.71× |
| All matches: crafting table | 431.73 µs | 7,165.15 µs | 16.60× |
| All matches: black shulker box | 467.59 µs | 7,798.17 µs | 16.68× |
| Failed lookup | 711.77 µs | 11,476.92 µs | 16.12× |
| First failed lookup | 533.79 µs | 12,280.99 µs | 23.01× |
The implementation is tested against ordered vanilla-style recipe scans, including positive cases, negative cases, alternative matching stacks, and randomized grids.
Installation
Place Retro FastSuite in the mods folder.
Requires MixinBooter
Source and license
Source: github.com/Sosea1/Retro-FastSuite
Retro FastSuite is based on FastSuite by Shadows of Fire and is distributed under the MIT License.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.12.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as retro-fastsuite-1.0.1.jar — drop this file into the mods folder
- Download size: 189 KB
- Download link checked 11 Nov 2026 — working
These come from our own check of the pack file, not from the source page.