UltraLight

UltraLight

The Modpack for any PC, even a potato-grade PC can run this!

by Unknown
361 Downloads
0 Followers
fabricMC 1.21.7lightweightmultiplayeroptimization

About this Modpack

🔷 UltraLight – Optimized Minecraft With Built-in Shaders
Minecraft Versions Supported: 1.20.1 to 1.21.x
Modloader: Fabric
Style: Performance + Visuals
Mods Included: 16 handpicked lightweight enhancements
Pre-installed Shader Support: ✅

UltraLight is a lightweight optimization modpack that boosts your Minecraft FPS while keeping the game visually stunning — yes, shaders included by default.

Whether you're running on a potato or just hate lag, UltraLight gives you blazing-fast performance, clean visuals, and zero fluff. It's the perfect base for casual play, long-term survival, or building worlds that look good and run great.

⚙️ Core Features
🚀 ModernFix, Sodium, Lithium, FerriteCore, ImmediatelyFast: Cut RAM usage, boost FPS and eliminate lag spikes.

💨 FastQuit & Remove Reloading Screen: Spend less time waiting and more time playing.

👁 Iris Shaders + Entity Culling: Gorgeous shader support without melting your system. Visual clarity meets peak performance.

🧩 AppleSkin, Not Enough Crashes, Mod Menu: QOL tools for smarter, safer gameplay.

🔧 Cloth Config & Fabric API: Smooth configuration support.

🎨 EMF & ETF: Upgrade entity visuals with HD skin and model support — no performance hit.

👥 Essential Mod: Easy multiplayer and friends list system — no server needed.

📦 What You Get
A clean, minimal modpack that runs like vanilla — but better

Built-in shader support with Iris (includes preconfigured shaderpacks)

Full multi-version support (1.20.1–1.21.x instances)

Under 50MB total mod size

Perfect base for SMP or solo survival

Easy to build on top of — add your own mods and still keep things fast

UltraLight is your "install-and-go" optimization pack. No configs to mess with. No bloated extras. Just beautiful, fast Minecraft.

WARNING: Not all mods listed here are in all versions

Available Versions

UltraLight 1.0.0-1.21.7release
MC 1.21.7fabric137 downloads
August 3, 2025
UltraLight 1.0.0-1.21.6release
MC 1.21.6fabric40 downloads
August 3, 2025
UltraLight 1.0.0-1.21.5release
MC 1.21.5fabric30 downloads
August 3, 2025
UltraLight 1.0.0-1.21.4release
MC 1.21.4fabric48 downloads
August 3, 2025
UltraLight 1.0.0-1.21release
MC 1.21fabric60 downloads
August 3, 2025

How to Set Up a UltraLight Server

1

Order Server

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

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "UltraLight" and click "Install". The fabric loader and Minecraft 1.21.7 are configured automatically.

3

Start Server & Play

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

Frequently Asked Questions

UltraLight 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 UltraLight 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 UltraLight without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.7). 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.

UltraLight 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.

Rent UltraLight Server

Start your own server with automatic modpack installation.

Recommended RAM:
6 GB(min. 4 GB)
From 8.00 / month
Create Server Now
1-Click Modpack Install
NVMe SSD Storage
DDoS Protection included
Automatic Backups

Details

License
LicenseRef-NovanceModding-Modpack-License
Server-side
Unsupported
Client-side
Required

Supported Versions

1.21.71.21.61.21.51.21.41.211.20.6

Start your UltraLight Server now

From €8.00/month with 6 GB RAM for the best performance.

Configure Server →