
👾 Adaptive Performance Tweaks: Spawn (11.x Classic)
ℹ️ 11.x Classic Module
This module belongs to the classic Adaptive Performance Tweaks 11.x module system and remains available for existing modpacks.
New features and active development continue in the new all-in-one version: Adaptive Performance Tweaks
⚠️ Do not use this module together with Adaptive Performance Tweaks 12.x or newer.

Server-side Forge module that optimizes mob spawning: smarter distribution, spawn limits, and spawner tweaks to keep entity counts under control. Works standalone on the server; clients are optional.
Status ✅
Stable 11.x Classic / LTS module for existing Forge modpacks.
Critical fixes and compatibility updates may be provided when needed. New features, new loader support, and modern Minecraft version updates are developed in the new all-in-one Adaptive Performance Tweaks version.
Requirements 🧩
Requires Adaptive Performance Tweaks: Core
Features ✨
- Server-side only; clients do not need to install the mod.
- Pick only the modules you want; highly configurable via config files.
- No core/mixin patches → broad mod compatibility.
- Built-in debug info to see what the optimizer is doing.
⚠️ Always keep regular backups of your world.
Spawn optimizations 👾
- Optimized mob spawn calculations around the player for better distribution and fewer entities.
- Basic spawn control: per-player/world caps, allow/deny lists, and presets for popular mods.
- Adaptive spawn rate considers players, caps, server load, and game difficulty.
- Spawner optimization: track loaded spawners and apply lightweight tweaks.
- Configurable via adaptive_performance_tweaks/spawn/*.toml.
Bundled modules 📦
Want everything at once? Install the bundled version:
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as adaptive_performance_tweaks_spawn_1.21.1-11.6.1.jar — drop this file into the mods folder
- Download size: 145 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.