ClientReflex
ClientReflex improves the experience on laggy servers: it reduces disconnections, automatically reconnects, makes movement and attack responses feel more instantaneous, shows real-time ping, and optimizes the connection without cheating.
Screenshots
About this Mod
ClientReflex (Fabric)
ClientReflex is a client-side mod for Minecraft that improves the multiplayer experience on servers with lag, high ping, or unstable connections. It optimizes how the client handles networking to reduce disconnections and make gameplay feel more responsive—without modifying the protocol or cheating.
Features
- Anti-disconnect system for micro network drops
- Intelligent auto-reconnect
- Network HUD with real-time ping, jitter, and statistics
- Packet prioritization (movement, attacks, block placement)
- Safe visual prediction (crystals, beds, anchors, TNT minecarts)
- Input smoothing and player interpolation
- Automatic render adjustments based on ping
- Netty optimizations (TCP_NODELAY, SO_KEEPALIVE)
Information
- Client-side only (no server required)
- Safe and compatible with anti-cheats
- Fully configurable (ModMenu optional)
- Minecraft 1.21.x · Fabric
- Packet Prioritization: Gives priority to critical packets such as movement and attacks.
Requirements
- Fabric Loader >= 0.15.0
- Fabric API (any version)
- Minecraft 1.21.x
- Java >= 21
Optional Dependencies
- ModMenu 7.2.2+ (for in-game configuration)
- Cloth Config API 18.0.145+ (required if using ModMenu for configuration)
Installation
- Install Fabric Loader and Fabric API.
- Place ClientReflex-1.0.0.jar into the .minecraft/mods/ folder.
- (Optional) Install ModMenu and Cloth Config API to configure the mod in-game.
Notes
This mod only optimizes the client–server connection without altering the game protocol, ensuring full compatibility with servers and anti-cheats.
Last updated: 2024
ClientReflex does not reduce your real ping; it improves perceived latency and gameplay stability.
Author: zxNoragami
License: MIT
Available Versions
How to Install ClientReflex on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.4).
Install Mod
Open the mod browser in the dashboard and search for "ClientReflex". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.4, 1.21
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
ClientReflex server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.4). You can switch loaders with one click in the panel.
Is ClientReflex compatible with fabric?
ClientReflex officially supports fabric for Minecraft 1.21.4, 1.21. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with ClientReflex – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ClientReflex consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install ClientReflex with just one click on your server.