Optidum is a performance optimization mod for Minecraft Fabric designed to synergize cleanly with Sodium and Titanium.

What It Does

• Entity AI Optimization: Throttles expensive AI goal and pathfinding evaluation for distant mobs, animals, and ambient creatures without affecting gravity, velocity, item despawning, or combat physics.
• Smart Chunk Prioritization: Prioritizes chunk loading and transmission in the direction the player is looking, and prevents chunk load/unload churn along chunk borders.
• Netty Packet Flush Consolidation: Consolidates small, rapid Netty network packets into batched flushes, cutting socket syscall overhead and reducing ping jitter.
• Low-Overhead Memory Management: Monitors JVM heap pressure on a 30-second interval, freeing transient caches and clearing level caches on dimension changes to prevent GC stutter and memory leaks.
• Dynamic FPS & Inactive Power Saver: Automatically throttles framerate to a configurable cap (5–60 FPS) when the window is unfocused (Alt-Tabbed) or minimized, cutting GPU power draw, heat, and fan noise. Seamlessly yields to the dynamic_fps mod if installed.

Non-Overlapping Architecture (Synergy with Titanium)

Optidum is designed to be fully compatible alongside Titanium:

Requirements

• Minecraft: 26.2
• Fabric Loader: >=0.19.3
• Fabric API
• Sodium: >=0.8.0 (Required dependency)
• Java: 25 or newer

Configuration

Optidum stores its configuration at:

config/optidum.json

All settings can be adjusted in-game directly through Options > Video Settings > Optidum

License

Optidum is licensed under the GNU Lesser General Public License v3.0 (LGPL-3.0). See LICENSE for details.

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.

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.