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data pack

Clear LagMinecraft data pack for 1.21.1

This anti lag data pack allows you to improve your vanilla servers performance a lot, while having many configuration options.

server onlynewest supported 1.21.1UtilityGame MechanicsOptimizationManagement
Latest version
2.9.4
Minecraft
1.16-pre1 to 1.21.1
Java
Java 21+
Loader
Data pack
Licence
LicenseRef-All-Rights-Reserved
Downloads
19.4k
Updated
2 y ago
Available on
Modrinth
Space NodePartner

Host Clear Lag servers

One click and Clear Lag is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Data pack
  • One click install
  • Version matched
  • Automatic backups
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Clear Lag declares support for, newest first, with the Java runtime that version needs.

Other data packs
MinecraftThroughJavaEvidenceReleased
1.21.1Data pack21+declared8 Aug 2024
1.21.1-rc1Data pack21+declared7 Aug 2024
1.21Data pack21+declared13 Jun 2024
1.21-rc1Data pack21+declared10 Jun 2024
1.21-pre4Data pack21+declared7 Jun 2024
1.21-pre3Data pack21+declared5 Jun 2024
1.21-pre2Data pack21+declared31 May 2024
1.21-pre1Data pack21+declared29 May 2024
24w21bData pack21+declared22 May 2024
24w21aData pack21+declared22 May 2024
24w07aData pack17+declared14 Feb 2024
24w06aData pack17+declared7 Feb 2024
24w05bData pack17+declared1 Feb 2024
24w05aData pack17+declared31 Jan 2024
24w04aData pack17+declared24 Jan 2024
24w03bData pack17+declared18 Jan 2024
24w03aData pack17+declared17 Jan 2024
23w51bData pack17+declared18 Dec 2023
23w51aData pack17+declared18 Dec 2023
1.20.4Data pack17+declared7 Dec 2023
1.20.4-rc1Data pack17+declared6 Dec 2023
1.20.3Data pack17+declared4 Dec 2023
1.20.3-rc1Data pack17+declared30 Nov 2023
1.20.3-pre4Data pack17+declared28 Nov 2023
1.20.3-pre3Data pack17+declared27 Nov 2023
1.20.3-pre2Data pack17+declared22 Nov 2023
1.20.3-pre1Data pack17+declared20 Nov 2023
23w46aData pack17+declared16 Nov 2023
23w45aData pack17+declared8 Nov 2023
23w44aData pack17+declared1 Nov 2023
23w43bData pack17+declared26 Oct 2023
23w43aData pack17+declared25 Oct 2023
23w42aData pack17+declared18 Oct 2023
23w41aData pack17+declared11 Oct 2023
23w40aData pack17+declared4 Oct 2023
1.20.2Data pack17+declared20 Sept 2023
1.20.2-rc2Data pack17+declared18 Sept 2023
1.20.2-rc1Data pack17+declared15 Sept 2023
1.20.2-pre4Data pack17+declared13 Sept 2023
1.20.2-pre3Data pack17+declared12 Sept 2023

182 older versions not shown.

Download

From Clear Lag’s own host. Nothing is re-hosted here.

2.9.4release1 Aug 2024

clearlag.zip · 0.0 MB · for 24w21a, 24w21b, 1.21-pre1, 1.21-pre2

Download latest
d29772ccb758…
Older versions2
  • 2.9.33 Mar 20241.16-pre1, 1.16-pre2, 1.16-pre3, 1.16-pre4, 1.16-pre50.0 MB6.7k downloadsc26c1be08850…Get
  • 2.9.28 Jan 20231.16-pre1, 1.16-pre2, 1.16-pre3, 1.16-pre4, 1.16-pre50.0 MB1.6k downloadsbaa65a25d585…Get

Frequently asked

Does Clear Lag work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Clear Lag declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Clear Lag support?

Everything the author has declared, from 1.16-pre1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Clear Lag on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which loader does Clear Lag need?

Data pack. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Clear Lag?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the data pack itself.

What licence is Clear Lag under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Clear Lag?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the data pack and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Clear Lag safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Dynamic LightsSupported entities and items such as torches, lanterns, or enchanted gear emit light! Server-side!Spawn AnimationsHostile mobs dig out of the ground or poof into existence when they spawn!More MobsHumanoid mobs get new variants through over 85 custom player heads or unused vanilla mobs! No Resource Pack needed!NoRollbackRemoves (annoying) rollbacksX Ray (no cheats)Find ores in mines faster and easier.Tree Vein MinerTree Vein Miner Removes entire trees (logs and leaves) when crouching

Last checked 6 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .