Optidum

Optidum

Optidum is a client-side Fabric addon built around Sodium. It adds configurable Sodium-related settings, a Video Settings configuration screen, render-distance handling for large frame-time spikes, and several integrated-server helper systems.

Version

Current version: 1.3

What It Does

• Requires Sodium so Optidum can write Sodium-related configuration values.
• Applies an optional Sodium settings profile focused on lowering some rendering costs.
• Reduces selected 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 after a cooldown.
• Keeps render-distance changes conservative to avoid frequent chunk reloads.
• Adds an Optidum config button inside Minecraft's Video Settings screen.

Main Features

Sodium Performance Profile

Optidum can write a Sodium config profile on startup. The profile changes settings related to:

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

Frame-Time Spike Handling

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

Video Settings Menu

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

Integrated-Server Helpers

Optidum also includes helper systems for integrated-world gameplay:

• Entity tick reduction based on player distance
• Chunk tracking and cache helpers
• Network packet helper logic
• Memory usage and memory pressure 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 frame-time spike render-distance handling enabled on lower-end systems.

License

Optidum is licensed under CC-BY-4.0. See LICENSE for details.