Buffs Optimizer

⚡ Buff Optimizer

Latency Compensation & Prediction

by Diolez

What Is Buff Optimizer?

Buff Optimizer is a client-side Fabric mod for Minecraft 1.21.x that attempts
to reduce the perceived delay of common gameplay interactions under high ping.

It does this through animation smoothing, client-side visual prediction, and
adaptive interpolation — all applied locally on your client. The server is
never affected, and no packets are modified.

Note: This mod improves how interactions look and feel on your screen.
It does not reduce your actual network latency or guarantee identical behavior
to a low-ping connection.

What It Does

🎯 Projectile Visual Prediction

Extrapolates the visual position of arrows, ender pearls, splash potions,
and fishing rods client-side based on their last known velocity. This reduces
the appearance of projectiles "snapping" or stuttering under packet delay.

This is a visual effect only — it does not change where projectiles land.

🏹 Bow & Crossbow Animation Smoothing

Attempts to smooth charge and release animations to better match your actual
input timing. Results vary depending on your ping and server tick rate.

🍎 Consumable Animation Compensation

Applies a small client-side offset to eating, drinking, and item-use animation
starts to reduce the visual gap between pressing use and seeing the animation begin.

🧈 Hand & Equip Animation Smoothing

Runs hand swing and item equip transitions through an exponential smoothing
filter to reduce choppiness caused by inconsistent tick delivery.

📡 Adaptive Ping Tracking

Measures your ping every second using Minecraft's built-in player list data
and uses an exponential moving average to drive all compensation systems.
Higher ping results in stronger compensation; lower ping results in less.

🐛 Debug HUD

An optional on-screen overlay (enabled in config) showing your current ping,
smoothed ping, and active prediction window in milliseconds.

Configuration

There is currently no in-game settings screen.
All settings are edited manually in:

.minecraft/config/buffs-optimizer.json

This file is created automatically on first launch with default values.

Setting · Default · Description
predictionStrength · 0.65 · Prediction intensity (0.0–1.0)
smoothingIntensity · 0.70 · Animation smoothing strength (0.0–1.0)
animationSync · true · Enable animation compensation
projectileOptimization · true · Enable projectile visual prediction
pingAdaptation · true · Scale compensation to measured ping
debugMode · false · Show debug HUD overlay
performanceMode · false · Reduce CPU cost at some accuracy loss
maxPredictionMs · 250 · Maximum prediction window in ms (50–500)

Important Limitations

• All effects are visual only — server-side gameplay is unchanged
• Prediction accuracy depends heavily on connection stability
• Does not work as a substitute for a stable, low-latency connection
• No in-game config screen — JSON editing required
• Results will vary per server and network conditions

Installation

1. Install Fabric Loader for Minecraft 1.21.x
2. Install Fabric API
3. Place the Buff Optimizer .jar in your mods/ folder
4. Launch the game — config generates automatically on first run

Gallery

Screenshots and demonstration images coming soon.
The debug HUD overlay and in-game visual differences will be shown here.

Compatibility

Mod · Status
Sodium · ✅ Compatible
Lithium · ✅ Compatible
FerriteCore · ✅ Compatible
Iris Shaders · ✅ Compatible
ModMenu · ✅ Compatible

Credits

Original Author: Diolez
Unauthorized redistribution without explicit credit to Diolez is prohibited.