Fastvancements
Lightweight advancement optimizing mod. Free Minecraft Java mod for 1.20.1.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.20.1 on Forge. On other versions it may install and then do nothing.
Fastvancements
I noticed that a lot of the existing advancement optimization mods are either outdated, carry unnecessary libraries, or cause compatibility issues when you have a big modpack.
I built this to fix those problems. It takes the best features from the other optimization mods and adds a few more on top, all while staying lightweight and stable.
Benchmark
Vanilla: 30 ms to 20ms
Fastvancements: 0ms (spark cannot even register it)
Test environment
500 Mods
2700 Advancements
20 minute
Spam inventory changes with random items.
Currently no mod comparison benchmarks are available. I could rush and do one but it would be inconsistent. If anyone is willing to help with it, contact me!
Credits
This project is available because of these mods.
Icterine
Cerulean
Achievement Optimizer
- Ships as fastvancements-1.2.jar — drop this file into the mods folder
- Download size: 88 KB
- Download link checked 23 Aug 2026 — working
These come from our own check of the pack file, not from the source page.