Cloud 9: FPS Optimized — v1.21.9 (Fabric)

The Ultimate FPS Booster for Minecraft 1.21.9

Goal: Maximize performance, stability, and smooth visuals while staying fully compatible with the latest features, including the new Copper Golems.

This release refines performance tuning and updates core mods to the newest Fabric ecosystem while identifying remaining missing modules for completion.

Highlights

• Updated for Minecraft 1.21.9
• Enhanced compatibility with Copper Golems and new game mechanics
• Improved lighting, rendering, and entity management
• Tweaked mod versions for smoother FPS and reduced stutter
• Optimized crash handling and telemetry blocking

Core Performance Stack

• Sodium – Rendering optimization
• Lithium – Game logic performance
• Phosphor (optional) – Lighting performance
• EntityCulling – Removes unseen entity rendering
• CullLeaves – Optimized foliage rendering
• ImmediatelyFast – Rendering and UI pipeline boost
• FpsReducer2 – Idle performance management
• No-Telemetry – Removes background data collection
• ImprovedCrashReports – Cleaner crash logs for troubleshooting

Visual and Model Enhancements

• ETF (Entity Texture Features) – Enables texture variants for mobs and entities
• EMF (Entity Model Features) – Enables alternate models for entities
• Iris + Sodium – Optional shader support with minimal FPS loss
• LambDynamicLights – Lightweight dynamic lighting

Utility and Quality of Life

• AppleSkin – Displays hunger and saturation
• Auto-Reauth – Automatically reconnects login sessions
• BridgingMod – Useful bridging mechanics and client utilities
• SearchStats – Quick access to in-game statistics
• Zoomify – Smooth zoom feature for exploration and building

Copper Golem Ready

This update ensures compatibility with the Copper Golem update and related mechanics, ensuring visual and logic mods support new entities without rendering lag or logic issues.

Still Missing Mods (To Add)

• appleskin
• auto-reauth
• cullleaves
• entityculling
• entity_model_features (EMF)
• entity_texture_features (ETF)
• improvedcrashreports
• no-telemetry
• BridgingMod