LagFixer

⭐ ⭐ (436 endorsements) 📥 304,605 downloads 📌 v1.7.1-folia 📅 5/20/2024
🟡 Updated this year

By lajczi · bukkit

⬇ Download Mod Source: Modrinth ↗ 📅 Updated: 8/16/2026 📅 Created: 5/20/2024

🔍 Analysis

  • 👍 0.1% endorsement rate
  • 🏆 #30 of 1560 bukkit mods in this game by downloads

📋 About This Mod

<div align="center"> <img src="https://i.imgur.com/hElpNHD.png" alt="LagFixer Logo" width="600"/> <br> <br> <p> <a href="https://lajczik.gitbook.io/lagfixer"><img src="https://img.shields.io/badge/Wiki-Gitbook-969393?style=for-the-badge&logo=gitbook" alt="Wiki"></a> <a href="https://discord.gg/CFmzJjgZdu"><img src="https://img.shields.io/badge/Support-Discord-5865F2?style=for-the-badge&logo=discord" alt="Discord"></a> <a href="https://github.com/lajczik/lagfixer"><img src="https://img.shields.io/badge/Source-GitHub-181717?style=for-the-badge&logo=github" alt="GitHub"></a> </p> <p><b>LagFixer helps improve server performance by optimizing the Minecraft engine.</b><br> While the paper itself is well optimized, some of its functions still require improvement. It won’t fix all lag by itself, but it can noticeably reduce it when used alongside well coded plugins and a solid server setup. It is not intended to resolve issues caused by low quality or poorly configured plugins.</p> </div> ## ⚡ Requirements & Compatibility - **Java:** 21 or later (https://modrinth.com/plugin/lagfixer/version/1.5.3) - **Server:** Bukkit/Spigot/Paper, hybrid Forge, etc. - **Version range:** `1.13.2` – `26.2` ## 🧩 Modules Overview | Module | Impact | Description & Features | | :--- | :---: | :--- | | **MobAiReducer** | 🔴 **VERY HIGH** | Replaces creature movement to optimize behavior. Disables unnecessary PathFinders. Crucial for massive animal farms. | | **EntityLimiter** | 🔴 **HIGH** | Restricts the number of entities per chunk. Prevents excessive entity accumulation. | | **LagShield** | 🔴 **HIGH** | Monitors server load and dynamically adjusts settings during latency spikes. | | **ExplosionOptimizer**| 🔴 **HIGH** | Limits explosion power and chain reactions (TNT, creepers, End Crystals). | | **ItemsCleaner** | 🟡 **MEDIUM** | Cleans up old items on the ground. Includes `/abyss` command for players to retrieve lost items. | | **RedstoneLimiter** | 🟡 **MEDIUM** | Disables demanding Redstone clocks to prevent server overload and crashes. | | **VehicleMotion** | 🟡 **MEDIUM** | Optimizes boats and minecarts. Automatically removes chest minecarts spawned in mineshafts. | | **AbilityLimiter** | 🟡 **MEDIUM** | Limits rapid Trident and Elytra usage to prevent excessive, fast-paced chunk loading. | | **ConsoleFilter** | 🟢 **VISUAL** | Filters console messages based on predefined rules. Enhances log clarity and reduces console clutter. | ## 🛠️ Features & Integration <details> <summary><b>🔌 Supported Plugins (optional)</b></summary> Technical: - (https://modrinth.com/plugin/placeholderapi) - (https://spark.lucko.me/download) - (https://modrinth.com/plugin/packetevents) Stackers: - (https://bg-software.com/wildstacker/) - (https://songoda.com/product/16) - (https://modrinth.com/plugin/stackmob) - (https://modrinth.com/plugin/rosestacker) Entity Models: - (https://modrinth.com/plugin/bettermodel) - (https://modrinth.com/plugin/mythicmobs) - (https://mythiccraft.io/index.php?resources/1213/) - (https://modrinth.com/plugin/levelledmobs) </details> <details> <summary><b>📊 Placeholders</b></summary> | Placeholder | Description | | :--- | :--- | | `%lagfixer_tps%` | Current ticks per second (TPS) | | `%lagfixer_mspt%` | Current milliseconds per tick (MSPT) | | `%lagfixer_cpuprocess%`| Current process CPU usage | | `%lagfixer_cpusystem%` | Current system CPU usage | | `%lagfixer_worldcleaner%`| Countdown to the next world clean | </details> <details> <summary><b>💻 Commands</b></summary> - `/lagfixer` - Main plugin command - `/abyss` - The place where deleted items go (recovery) </details> ## 🛡️ Privacy & Data Collection This plugin sends error reports, Spark profiler data and bStats metrics to the author's server solely for plugin optimization and finding new performance improvements for your server. Enabled by default. Disable error reporting & Spark via `main.errors_reporter: false` and bStats via `main.bStats: false` in `config.yml`. ## Metrics bStats: !(https://bstats.org/signatures/bukkit/LagFixer.svg) ## 🌌 Other Plugins Check out my other projects: <div align="center"> <a href="https://modrinth.com/plugin/gatekeeper-mc"> <img src="https://i.imgur.com/YHGjHR4.png" alt="Gatekeeper" width="45%"> </a> &nbsp;&nbsp; <a href="https://modrinth.com/plugin/dynamicdns"> <img src="https://i.imgur.com/BikoONq.png" alt="DynamicDNS" width="45%"> </a> </div>

LagFixer Logo

Wiki Discord GitHub

LagFixer helps improve server performance by optimizing the Minecraft engine.

While the paper itself is well optimized, some of its functions still require improvement. It won’t fix all lag by itself, but it can noticeably reduce it when used alongside well coded plugins and a solid server setup. It is not intended to resolve issues caused by low quality or poorly configured plugins.

## ⚡ Requirements & Compatibility - Java: 21 or later [(use version 1. 5. 3 for java 8 support)](https://modrinth.com/plugin/lagfixer/version/1. 5. 3) - Server: Bukkit/Spigot/Paper, hybrid Forge, etc. - Version range: `1. 13. 2` – `26. 2`

## 🧩 Modules Overview

| Module | Impact | Description & Features | | :--- | :---: | :--- | | MobAiReducer | 🔴 VERY HIGH | Replaces creature movement to optimize behavior. Disables unnecessary PathFinders. Crucial for massive animal farms. | | EntityLimiter | 🔴 HIGH | Restricts the number of entities per chunk. Prevents excessive entity accumulation. | | LagShield | 🔴 HIGH | Monitors server load and dynamically adjusts settings during latency spikes. | | ExplosionOptimizer| 🔴 HIGH | Limits explosion power and chain reactions (TNT, creepers, End Crystals). | | ItemsCleaner | 🟡 MEDIUM | Cleans up old items on the ground. Includes `/abyss` command for players to retrieve lost items. | | RedstoneLimiter | 🟡 MEDIUM | Disables demanding Redstone clocks to prevent server overload and crashes. | | VehicleMotion | 🟡 MEDIUM | Optimizes boats and minecarts. Automatically removes chest minecarts spawned in mineshafts. | | AbilityLimiter | 🟡 MEDIUM | Limits rapid Trident and Elytra usage to prevent excessive, fast-paced chunk loading. | | ConsoleFilter | 🟢 VISUAL | Filters console messages based on predefined rules. Enhances log clarity and reduces console clutter. |

## 🛠️ Features & Integration

🔌 Supported Plugins (optional)

Technical: - (https://modrinth.com/plugin/placeholderapi) - (https://spark.lucko.me/download) - (https://modrinth.com/plugin/packetevents)

Stackers: - (https://bg-software.com/wildstacker/) - (https://songoda.com/product/16) - (https://modrinth.com/plugin/stackmob) - (https://modrinth.com/plugin/rosestacker)

Entity Models: - (https://modrinth.com/plugin/bettermodel) - (https://modrinth.com/plugin/mythicmobs) - (https://mythiccraft.io/index.php?resources/1213/) - (https://modrinth.com/plugin/levelledmobs)

📊 Placeholders

| Placeholder | Description | | :--- | :--- | | `%lagfixer_tps%` | Current ticks per second (TPS) | | `%lagfixer_mspt%` | Current milliseconds per tick (MSPT) | | `%lagfixer_cpuprocess%`| Current process CPU usage | | `%lagfixer_cpusystem%` | Current system CPU usage | | `%lagfixer_worldcleaner%`| Countdown to the next world clean |

💻 Commands

  • `/lagfixer` - Main plugin command
  • `/abyss` - The place where deleted items go (recovery)

## 🛡️ Privacy & Data Collection This plugin sends error reports, Spark profiler data and bStats metrics to the author's server solely for plugin optimization and finding new performance improvements for your server. Enabled by default. Disable error reporting & Spark via `main.errors_reporter: false` and bStats via `main.bStats: false` in `config.yml`.

## Metrics bStats: !(https://bstats.org/signatures/bukkit/LagFixer.svg)

## 🌌 Other Plugins Check out my other projects:

Gatekeeper    DynamicDNS

🤖 AI-enhanced — based on mod data

📊 Mod Details

Game
Minecraft Plugins
Author
lajczi
Version
1.7.1-folia
Downloads
304,605
Endorsements
436
Category
bukkit
Created
5/20/2024
Updated
8/16/2026
Game Versions
1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4
Tags
mobs, optimization, utility

🔧 How to Install Minecraft Plugins Mods

Download from Modrinth. Use Prism Launcher or drop into your mods folder.

📖 Full step-by-step install guide for Minecraft Plugins →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Minecraft Plugins commands, item IDs, and more.

❓ Frequently Asked Questions

Which Minecraft Plugins versions does LagFixer support?

The author lists 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5. Other versions may work but are untested by the author.

What is the latest version of LagFixer?

Version 1.7.1-folia, published 2026-08-16 with 304,605 downloads recorded at the source.

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