Fix My SpawnR Mod fixes lag caused by active but unused mob spawners in Minecraft. It reduces unnecessary server strain by deactivating spawners that are not actively used, improving performance on servers and in modpacks.
Features:
- Reduces lag caused by mob spawners scanning for players and spawn locations.
- Adds a deadlock timer to spawners to stop spawning logic when not in use.
- Works in single player but has greatest impact on servers.
- Supports redstone-controlled spawners for mob farms.
How to Use:
- For Minecraft 1.18:
- Place a redstone signal ≥ 8 on top of a spawner (powered redstone dust, torch, or block) to activate it.
- Recommended:
redstone dust + leverfor minimal light and space.
- For Minecraft 1.19:
- Apply a redstone signal ≥ 8 to the spawner (lever on side, torch below, etc.) to activate it.
- Recommended:
leverfor 0 light and compact setup.
This allows you to still use mob farms while keeping unused spawners inactive.
Configs:
- Server-side only. Clients do not need this mod.
- Deadlock timer can be configured in the server config file.
- Default timer: 1 Minecraft day (
24000 ticks).
Screenshots:
Fix My SpawnR Mod Download Links
For Minecraft 1.21.11
Forge/NeoForge Version: Download from Server 1 – Download from Server 2
Fabric/Quilt Version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.1, 1.21
Forge/NeoForge Version: Download from Server 1 – Download from Server 2
Fabric/Quilt Version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.1, 1.20
Forge/NeoForge Version: Download from Server 1 – Download from Server 2
Fabric/Quilt Version: Download from Server 1 – Download from Server 2
For Minecraft 1.19.2, 1.19.1, 1.19
Forge Version: Download from Server 1 – Download from Server 2
Fabric Version: Download from Server 1 – Download from Server 2
For Minecraft 1.18.2
Forge Version: Download from Server 1 – Download from Server 2
Fabric Version: Download from Server 1 – Download from Server 2
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.11, 1.20.1
- 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: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Fix My SpawnR Mod (1.21.11, 1.20.1) – Reduces Mob Spawner Lag is a free Minecraft Java mod. Compatible with Minecraft 1.21.11, 1.20.1. Download it and open it directly in the game.