Plutonium244 — Smarter Chunk Rendering for Minecraft

Stop re-rendering what hasn't changed.
Plutonium244 is a Fabric optimization mod that targets one of Minecraft's most wasteful rendering habits: invalidating an entire chunk when only a single block changes.

The Problem

Every time a block is placed, broken, or updated in Minecraft, the game marks the entire 16×16 chunk as dirty and queues it for a full re-render — even if only one block changed in a small corner of that chunk.

In busy environments — redstone contraptions, players building, entities interacting — this creates hundreds of unnecessary render calls per second, hammering your CPU and GPU for no reason.

The Plutonium Solution

Plutonium244 subdivides each chunk into 16 subchunk sections of 4×4 blocks and tracks updates at that granular level.

When a block changes, only its exact 4×4 subchunk section is marked dirty — not the whole chunk.
The result: drastically fewer render invalidations, lower CPU and GPU load, and smoother gameplay.

Vanilla Minecraft:       [ block changes ] → entire 16×16 chunk re-rendered 
Plutonium244:            [ block changes ] → only the 4×4 section re-rendered

Features

Feature	Description
4×4 Subchunk Tracking	Each chunk split into 16 precise sections — only the affected one is updated
Smart Event Filtering	Internal Minecraft events (world gen, loading) are ignored to prevent false invalidations
Auto Mod Detection	Compatible mods detected and logged at startup automatically
Client & Server Ready	Works in both environments out of the box

Works Great Alongside

Plutonium244 automatically detects and integrates with these popular optimization mods:

⚡ Sodium	🪨 Lithium	🌊 Krypton
💎 Indium	⚙️ C2ME	🗺️ Chunky

Requirements

Minecraft: 1.21.11 (Java Edition)
Loader: Fabric 0.18.5+
Dependency: Fabric API

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Versions

UNLIMITED: Is an experimental version for hight performance but it can be UNSTABLE.
BALANCED: Recommended version. Optimized for hight performanceand memory usage.
60 FPS: Locks the game at a constant 60 FPS for ultra-smooth and consistent gameplay.

Found a bug or have a suggestion? Open an issue and help shape the mod's future!

About

Made with ☢️ by FrameKiller
with Mit licence

Plutonium244 is not affiliated with or endorsed by Mojang or Microsoft.