LiteCoreX

LiteCoreX is a lightweight Fabric optimization mod for Minecraft 1.21.1 focused on safe, configurable performance improvements. It reduces client visual load, limits distant entity processing, applies optional FPS-focused vanilla settings, and performs conservative memory cleanup without replacing core game systems.

Features

• Client optimization: reduces particles, entity shadows, clouds, biome blending, entity render distance, and other expensive visual settings
• Entity optimization: limits ticking and rendering for distant low-priority entities such as dropped items and experience orbs
• Tick optimization: monitors server tick pressure and applies safe additive optimizations without replacing the vanilla tick loop
• Memory optimization: performs conservative cleanup during high memory pressure
• Configurable presets: enable or disable each module independently and choose Low, Medium, or High levels
• Max FPS mode: quickly applies the most aggressive safe settings for better performance

Configuration

Open the LiteCoreX menu in-game with:

• O
• /litecorex

Settings are saved to:

```text config/litecorex.properties