# SkyFlow Optimized Modpack Summary
A carefully curated **Fabric-based optimization modpack** for Minecraft 1.21.9, designed to deliver superior performance while maintaining gameplay integrity. This pack integrates **70+ handpicked mods** that work in harmony to eliminate stuttering, enhance visuals, and improve overall gaming experience.
## 🎯 Core Features
- **Performance Foundation**: Powered by Sodium, Lithium, and FerriteCore for maximum FPS and stability
- **Visual Enhancement**: Full Iris shader support with ETF/EMF texture optimizations
- **Quality of Life**: Includes Jade, inventory management, and movement enhancements
- **Audio Immersion**: Ambient sounds and physics-based audio improvements
## ⚡ Performance Results
- **Exploration**: Stable 300+ FPS (vs 270+ with stutters in vanilla)
- **Idle Performance**: Consistent 400+ FPS
- **Frame Stability**: Eliminates rendering and logic-related stutters
- **Memory Efficiency**: Optimized resource usage
## 🚀 Installation & Requirements
- **Simple Setup**: Drag & drop .mrpack file into your launcher
- **System Requirements**: 6GB+ RAM allocated (8GB+ for shaders)
- **Storage**: ~150MB modpack size
- **Compatibility**: Most mods support 1.21.9 (some in beta)
## ⚠️ Important Notes
- Includes convenience features (free camera, interface movement) - use responsibly on multiplayer servers
- Default Chinese localization available (optional)
- Curated performance-friendly texture packs included
# 🛠️ JEI Compatibility Issues
## Problem Analysis
**Core Conflict**:
- **Current Installation**: Fabric API 0.134.0+1.21.9
- **JEI Requirement**: Fabric API 0.137.0+1.21.10 or higher
- **Version Mismatch**: JEI 26.1.0.16 requires an updated Fabric API version
> However, version 1.21.9 does not include Fabric API 0.137.0+1.21.10. This is because Fabric API 0.137.0+1.21.10 is included in version 1.21.10.
**For details, please refer to the following JEI issue report:**
- [https://github.com/mezz/JustEnoughItems/issues/4161](https://github.com/mezz/JustEnoughItems/issues/4161)
- [https://github.com/mezz/JustEnoughItems/issues/4140](https://github.com/mezz/JustEnoughItems/issues/4140)
**Perfect for players seeking buttery-smooth gameplay without compromising vanilla experience.**
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }
