Hazel Crystal Optimizer - HCO

Proven fastest Crystal PvP optimizer after dozens of tests. Zero delay on any ping - crystals at inhuman speeds. Simply the best optimizer available

8.4K Downloads

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About this Mod

Hazel Crystal Optimizer - HCO

After dozens of tests, HCO is proven to be the fastest Crystal PvP optimizer ever created. Zero delay, zero cooldown - crystals explode instantly regardless of your ping. This optimizer crystals so fast that no human can match its speed.

5 speed levels from Careful to Extreme. Level 1 for maximum compatibility, Level 5 for pure performance. Hold to place, hold to break, crystal while doing anything.

Simply the best crystal optimizer available.

Press H for GUI • /hazel for commands

Created by HazelBlade_

Available Versions

Hazel Crystal Optimizer - HCO 1.5.654vbrelease

MC 1.21.4fabric

November 22, 2025

Hazel Crystal Optimizer - HCO 1.0.056vbrelease

MC 1.21.4fabric

November 21, 2025

How to Install Hazel Crystal Optimizer - HCO on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.4).

Install Mod

Open the mod browser in the dashboard and search for "Hazel Crystal Optimizer - HCO". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.4

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Hazel Crystal Optimizer - HCO server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.4). You can switch loaders with one click in the panel.

Is Hazel Crystal Optimizer - HCO compatible with fabric?

Hazel Crystal Optimizer - HCO officially supports fabric for Minecraft 1.21.4. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Hazel Crystal Optimizer - HCO – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Hazel Crystal Optimizer - HCO consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.