
Xtremely Optimized
[1.21.4] [Fabric📜] An open-source lightweight, high-performance modpack designed to maximize FPS, improve world loading, and enhance graphics—all while keeping the classic Minecraft feel. It’s perfect for low-end PCs and high-end gaming setups alike 🎮.
Screenshots

About this Modpack
⚡ Xtremely Optimized
🚀 The Ultimate Performance Modpack for Fabric
Boost FPS • Enhance Graphics • Reduce Lag
📌 About Xtremely Optimized
Xtremely Optimized is a lightweight, high-performance modpack designed to maximize FPS, improve world loading, and enhance graphics—all while keeping the classic Minecraft feel. It’s perfect for low-end PCs and high-end gaming setups alike!
✅ Massive FPS Boost – No more lag spikes, smoother gameplay.
✅ Better World Loading – Faster chunks, improved performance.
✅ Enhanced Graphics – Beautiful visuals with no FPS loss.
✅ Multiplayer-Ready – Play with friends, no chat reporting!
✅ Pre-Tuned Settings – No tweaking required, just install & play!
🛠️ What's Inside?
⚙️ Performance Mods
- Lithium – Optimized physics, AI, and tick performance.
- Sodium – The best FPS-boosting rendering mod.
- FerriteCore – Cuts RAM usage in half.
- Dynamic FPS – Reduces background lag and improves focus performance.
- ImmediatelyFast – Enhances rendering speed for more stable FPS.
- More Culling – Improves rendering efficiency to save system resources.
🎨 Visual Enhancements (No FPS Drop!)
- Iris Shaders – Enables high-performance shaders as an OptiFine replacement.
- No Chat Reports – Keeps multiplayer safe & private.
- Custom Splash Screen – Allows personalized loading screen customization.
📝 Full mod list available on Modrinth.
🚀 Xtremely Optimized - Installation Guide
🟢 Modrinth Launcher (Recommended)
- Open Modrinth Launcher.
- Go to the Browse tab.
- Search for "Xtremely Optimized".
- Click Install and wait for the download to finish.
- Go to the Library tab, select the modpack, and click Play ▶️.
🔵 Prism Launcher / PolyMC
- Open Prism Launcher or PolyMC.
- Click Add Instance ➕.
- Go to the Modrinth tab.
- Search for "Xtremely Optimized".
- Select the latest version and click OK ✅ to install.
- Once installed, select the instance and click Launch 🚀.
🟠 ATLauncher
- Open ATLauncher.
- Go to the Packs tab 📦.
- Click Add Modrinth Pack and search for "Xtremely Optimized".
- Select the latest version and click Install ⬇️.
- Once installed, select the instance and click Play ▶️.
🟡 CurseForge / Overwolf Launcher
- Open CurseForge Launcher.
- Click on Minecraft 🟩 and go to Browse Modpacks.
- Search for "Xtremely Optimized".
- Click Install ⬇️ and wait for the download to finish.
- Click Play ▶️ to launch.
🔴 MultiMC
- Open MultiMC.
- Click Add Instance ➕.
- Select Import from Modrinth.
- Search for "Xtremely Optimized" and select the latest version.
- Click OK ✅, then launch the instance 🚀.
⚡ Other Launcher
- Open Any Launcher.
- Find For Modpack install Section.
- Search "Xtremely Optimized" Find and Select Version And install.
- Click Play To Launch.
❓ FAQ
Q: What Minecraft version does this support?
A: The modpack is designed for Minecraft 1.21.4 and newer updates.
Q: Is OptiFine required?
A: No! Instead, this pack includes Iris Shaders, which supports shaders better than OptiFine without FPS drops.
Q: How do I report issues or suggest mods?
A: Open an issue on GitHub or join our Discord.
🌟 Support & Contribute
💡 Want to help improve Xtremely Optimized?
⭐ Like the pack? Give it a ⭐ star on GitHub & Modrinth!
🔹 Fork the repo and submit PRs for improvements.
🔹 Report bugs & suggest new mods via GitHub Issues.
🔹 Join the community on Discord.
📜 License
Xtremely Optimized is open-source and licensed under Apache License 2.0.
You're free to modify and share, but please credit the original creators.
🔗 Useful Links
📥 Download on Modrinth
📂 GitHub Repository
🎮 Join Our Discord
🚀 Enjoy Minecraft like never before with Xtremely Optimized!
Available Versions
How to Set Up a Xtremely Optimized Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Xtremely Optimized). Based on player count: per 8 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Xtremely Optimized" and click "Install". The fabric loader and Minecraft 1.21.4 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
Xtremely 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 Xtremely 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 Xtremely Optimized without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.4). 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.
Xtremely 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.
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Supported Versions
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