Optidum

Optidum is a client-side Fabric performance addon built around Sodium. It requires Sodium and applies extra FPS-focused tuning, lag-spike protection, and configurable optimizations for smoother gameplay.

Version

Current version: 1.3

What It Does

• Requires Sodium so Optidum can target Sodium's rendering and chunk pipeline.
• Applies a Sodium performance profile for better FPS and fewer stutters.
• Reduces heavy visual settings such as clouds, particles, smooth lighting, biome blending, and entity distance scaling when performance mode is enabled.
• Detects large frame-time spikes and can temporarily reduce render distance to reduce chunk-related lag spikes.
• Keeps render-distance changes conservative so worlds do not constantly reload chunks.
• Adds an Optidum config button directly inside Minecraft's Video Settings screen.

Main Features

Sodium Performance Profile

Optidum writes a performance-oriented Sodium config profile on startup. The profile focuses on:

• Deferred chunk updates
• Entity culling
• Fog occlusion
• Block face culling
• Compact vertex format
• Persistent mapping
• Chunk multidraw
• Lower CPU render-ahead pressure

Lag Spike Reduction

Optidum monitors frame time. When a large spike is detected, it can lower render distance by one step after a cooldown instead of constantly changing it every few seconds.

Video Settings Menu

Open Minecraft's Video Settings screen and press the Optidum button to access the Optidum configuration menu.

Server-Side Integrated Optimizations

Optidum also includes optimizers for integrated-world gameplay:

• Entity tick reduction based on player distance
• Chunk tracking and cache helpers
• Network packet helper logic
• Memory and garbage collection monitoring

Requirements

• Minecraft 26.1.1
• Fabric Loader 0.18.6 or newer
• Fabric API
• Sodium 0.8.0 or newer
• Java 25 or newer

Installation

1. Install Fabric Loader for Minecraft 26.1.1.
2. Install Fabric API.
3. Install Sodium 0.8.0 or newer.
4. Place the Optidum jar in your mods folder.
5. Launch Minecraft and open Video Settings to configure Optidum.

Configuration

Optidum stores its config at:

config/optidum.json

Sodium performance options are written to Sodium's config file when Optidum starts. If you change settings in-game, restart Minecraft to ensure every Sodium-side option is fully reloaded.

Recommended Use

For best results:

• Keep Sodium installed and updated.
• Use the Optidum button in Video Settings to tune target FPS and render-distance limits.
• Avoid setting max render distance too high if your world reloads chunks frequently.
• Leave lag-spike render-distance reduction enabled on lower-end systems.

License

Optidum is licensed under CC0-4.0. See LICENSE for details.

Links

• GitHub: https://github.com/BudgetGamer1503/optidum
• Issue Tracker: https://github.com/BudgetGamer1503/optidum/issues