Sword Optimizer

Processes sword swings instantly on your screen instead of waiting for the server, removing combat lag on high ping.

4.3K Downloads

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Configure a Compatible Minecraft Server

About this Mod

Sword Optimizer

Sword Optimizer is a lightweight Minecraft mod that makes sword combat feel smoother and more responsive by processing sword swings instantly on the client side instead of waiting for the server response.

The mod keeps the vanilla combat feel while reducing the delay between clicking and seeing your attack.

Features

Instant sword swing processing
Smoother combat feel
Vanilla-friendly
Lightweight and optimized
Multiplayer compatible

Status

First public release — still WIP, but fully functional.

Requirements

Java 21 or Higher
Fabric Loader (forge coming soon!)
Minecraft 1.21.9-1.21.11
YetAnotherConfigLib v3
Mod Menu (optional, only if you want to change settings)

Available Versions

Sword Optimizer v.0.5.0-betarelease

MC 1.21.9, 1.21.10, 1.21.11fabric

May 24, 2026

How to Install Sword Optimizer on Your Client

Install the Mod Loader Locally

Install fabric for your local Minecraft version.

Download the Matching File

Choose the Sword Optimizer file for fabric and Minecraft 1.21.11.

Install Mod

Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Does Sword Optimizer need to be installed on the Minecraft server?

No. Modrinth marks Sword Optimizer as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.

Which version and loader does Sword Optimizer require?

Use a file for fabric and your exact Minecraft version. Supported versions include 1.21.11, 1.21.10, 1.21.9. Files for different loaders are not interchangeable.

Sword Optimizer is not working – what should I check?

First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.