How to Optimize Your NeoForge Server Performance

NeoForge is becoming the new standard for Minecraft modding, building on the Forge legacy with improved tooling and community support. This guide covers the best performance mods for each NeoForge version.

💡 Tip: Before installing these mods, make sure you've followed our general Performance Guide for server optimizations that apply to all Minecraft servers.

📝 Note: This guide assumes NeoForge is already installed on your server. If not, see our version guide to switch to NeoForge. To upload mods, follow our mod installation guide.

Recommended Mods by Version

Find your NeoForge version below for our recommended performance mods.

Mods not listed here either change vanilla behavior or are generally considered unstable by the community.

NeoForge 1.21.10 and Beyond

As Minecraft releases more frequently, some mods may not update for every minor version. Most of the mods below aim to support current and future versions.

• Lithium: One of the most important mods for performance on a server. Lithium optimizes gameplay logic without changing vanilla mechanics.
• FerriteCore: Moderate reduction in RAM usage from patches to block states and locations.
• ModernFix: Fixes various bugs and improves startup time and memory footprint.
• Structure Layout Optimizer: Improves generation speed of structures, especially with larger modded structures.
• Krypton: Networking and packet delivery optimization.

NeoForge 1.21.1

• Lithium: Optimizes gameplay logic without changing vanilla mechanics.
• FerriteCore: Moderate reduction in RAM usage from patches to block states and locations.
• ModernFix: Fixes various bugs and improves startup time and memory footprint.
• Structure Layout Optimizer: Improves generation speed of structures, especially with larger modded structures.
• Krypton: Networking and packet delivery optimization.

Next Steps

It is highly recommended to pre-generate chunks on your server. This eliminates terrain generation lag during gameplay.

If you've followed this guide and are still experiencing issues, analyze your server using the Spark profiler. Check out the Spark Guide for instructions on tracking down the specific cause of your lag.

As always, if you get stuck or have any questions, just join our Discord.