UltraFPS

Name: UltraFPS
Price: 8 EUR
Author: Znfl2

A specialized performance client bridging version gaps for Fabric 1.21.x, featuring advanced entity models, dynamic visuals, and optimized FPS.

by Znfl2

891 Downloads

0 Followers

fabricMC 1.21.11lightweightmultiplayeroptimization

Rent UltraFPS Server

Screenshots

About this Modpack

🌐 Hybrid Performance & Visuals (Fabric 1.21.x)
This modpack is a carefully assembled collection of tools designed for the Minecraft 1.21.x ecosystem. It bridges the gap between recent sub-versions 1.21.11, selecting the most stable and feature-rich versions of each mod to ensure a seamless "Vanilla+" experience.

⚡ Multi-Version Optimization
We have tested and selected specific builds to provide maximum stability across the 1.21 branch:

Engine: Powered by the latest Sodium and Lithium stack for 1.21.11 compatibility.

Resource Management: Includes Dynamic FPS and FpsReducer2 to handle background resource allocation efficiently.

Culling Tech: Uses Entity Culling to ensure high frame rates even in complex environments.

🎨 Enhanced Visual Identity
Next-Gen Models: Features Entity Model Features (EMF) and Entity Texture Features (ETF) for 1.21.11, allowing for complex animations and textures without OptiFine.

Environmental Detail: Falling Leaves provides an atmospheric touch, making forests feel alive and dynamic.

Lighting: Sodium Dynamic Lights allows for real-time illumination from held items.

🛠 Utility & Interface
Advanced Navigation: Zoomify (1.21.11-compatible) and BetterF3 (1.21.11) provide the best tools for exploration and debugging.

Information HUD: AppleSkin provides vital hunger and saturation data.

Integrated Browser: Resourcify allows you to update your look without leaving the game menu.

📋 Compatibility & Environment
Environment: This is a Client-Side modpack. It is designed to work on any server (Vanilla, Paper, Fabric).

Available Versions

UltraFPS 1.0.1release

MC 1.21.11fabric757 downloads

January 10, 2026

UltraFPS 1.0.0release

MC 1.21.4fabric134 downloads

February 11, 2025

How to Set Up a UltraFPS Server

Order Server

Choose at least 4 GB RAM (6 GB recommended for UltraFPS). Based on player count: per 8 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "UltraFPS" and click "Install". The fabric loader and Minecraft 1.21.11 are configured automatically.

Start Server & Play

Start the server – all mods are loaded automatically. Share the server IP with friends and play together!

Frequently Asked Questions

UltraFPS server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.

How much RAM does a UltraFPS server really need?

Minimum 4 GB, recommended 6 GB for stable performance. per 8 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).

Can I add custom mods to UltraFPS without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.11). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.

UltraFPS server lagging – performance tips

1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.