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How to install "Marlow's Crystal Optimizer"

Optimization that fixes waiting on the server after crystal break before end crystal entities are cleaned.

Author

DevBram

Downloads

2.9M

Last Updated

May 5, 2026

License

MIT

Mod Loaders

Fabric

Minecraft Versions

26.1.2 1.21.11 1.20.6 1.19.4
magic optimization utility

Quick Install ID

#marlow-crystal-optimizer

Install Marlow's Crystal Optimizer in GDLauncher

Marlow's Crystal Optimizer runs on Fabric. Pick whichever your existing instance uses, or create a new one. GDLauncher installs the correct loader automatically.

Install on Fabric

  1. Open GDLauncher and create a new instance (the + button on the Library page).
  2. Pick the Fabric loader and a Minecraft version that Marlow's Crystal Optimizer supports (26.1.2, 1.21.11, 1.20.6 are common choices).
  3. Open the new instance, go to the Addons tab, and click Add Addons.
  4. Paste the Quick Install ID #marlow-crystal-optimizer, find Marlow's Crystal Optimizer in the results, and hit Download. GDLauncher pulls dependencies automatically.
  5. Hit Play. That's it.

Before you install

Make sure your Minecraft version matches what Marlow's Crystal Optimizer supports. As of the latest release, 26.1.2, 1.21.11, 1.20.6 are supported. Marlow's Crystal Optimizer only runs on Fabric; mods built for other loaders won't work. GDLauncher checks compatibility for you and won't install something incompatible with the instance you've chosen.

Frequently Asked Questions

Is Marlow's Crystal Optimizer free?

Yes. Marlow's Crystal Optimizer is free to download and install through GDLauncher. GDLauncher itself is also free and ad-free.

What Minecraft versions does Marlow's Crystal Optimizer support?

Marlow's Crystal Optimizer supports Minecraft 26.1.2, 1.21.11, 1.20.6, 1.19.4. GDLauncher will automatically pick a compatible version when you install it.

Does Marlow's Crystal Optimizer require Forge or Fabric?

Marlow's Crystal Optimizer requires Fabric. GDLauncher will install the correct loader automatically when you create an instance.

How do I install Marlow's Crystal Optimizer?

Open GDLauncher, go to your instance's Addons tab, click Add Addons, and paste the Quick Install ID #marlow-crystal-optimizer. GDLauncher handles dependencies and the right Minecraft version automatically.

Who made Marlow's Crystal Optimizer?

Marlow's Crystal Optimizer is made by DevBram. The full project lives on Modrinth (https://modrinth.com/mod/marlow-crystal-optimizer).

Need help?

Read our troubleshooting guide, check the guides section, or join the GDLauncher Discord community.

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