Rarely Optimized

Rarely Optimized

Rarely Optimized is the performance focused Minecraft optimization mod pack.

by axobsib
33 Downloads
0 Followers
fabricMC 1.21.10lightweightoptimization

About this Modpack

Rarely-Optimized - Lightweight Optimization Modpack

Rarely-Optimized is a lightweight, client-side Fabric optimization modpack designed to significantly improve FPS, reduce lag, and provide a smooth Minecraft experience without changing vanilla gameplay.

This modpack focuses on performance, stability, and configurability while keeping the game visually clean and shader-ready.

🚀 Features

Major FPS boost using modern optimization mods

Reduced CPU & RAM usage

Faster chunk loading and smoother gameplay

Shader support with Iris

Fully client-side (works on any server)

Vanilla-friendly, no gameplay changes

🧩 Included Mods

Sodium, Sodium Extra & Reese’s Sodium Options

Iris Shaders

FerriteCore & ModernFix

Entity Culling & More Culling

ImmediatelyFast & Dynamic FPS

Mod Menu & Cloth Config API

Krypton, Exordium, ScalableLux

Mouse Tweaks, Zoomify, Dynamic Lights

Crash Assistant

🖥️ Compatibility

Loader: Fabric

Environment: Client-side only

Works with: Singleplayer & Multiplayer

Shader Support: Yes (via Iris)

⚠️ Notes

This modpack does not need to be installed on the server

Some mods may use different versions for stability

Designed for low-end to mid-range PCs, but works great on high-end systems too

📌 Goal

Vanilla Minecraft, but faster, smoother, and more stable.

Available Versions

Rarely Optimized 1.8.0release
MC 1.21.8fabric17 downloads
January 21, 2026
Rarely Optimized 1.10.0release
MC 1.21.10fabric16 downloads
January 17, 2026

How to Set Up a Rarely Optimized Server

1

Order Server

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

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Rarely Optimized" and click "Install". The fabric loader and Minecraft 1.21.10 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

Rarely Optimized 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 Rarely Optimized 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 Rarely Optimized without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.10). 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.

Rarely Optimized 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 Rarely Optimized 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-All-Rights-Reserved
Server-side
Unsupported
Client-side
Required

Supported Versions

1.21.101.21.8

Start your Rarely Optimized Server now

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

Configure Server →