ModsFinder

Litematica Chunk Lag Fix

by tvinch_

Litematica Chunk Lag Fix targets the freezes that appear when huge Litematica schematics cross chunk boundaries in the visible area.

FabricClient-side onlyMIT License1.21.8

What it does

The mod optimizes how Litematica updates its visible chunk cache, which reduces the stutter that occurs during chunk transitions with large schematics loaded. It is a client-side only addition for Fabric, built for the 1.21.8 game version, and it requires both Litematica and MaLiLib to run. Players who use it alone on a single-player or multiplayer client need nothing else on the server side.

Key features

  1. Smoother chunk transitions

    Reduces freezes that happen when moving across chunks while a large schematic is displayed.

  2. Optimized chunk cache updates

    Changes how visible chunk data is refreshed, so fewer updates run at the moment a chunk loads.

  3. Graph-based comparison

    Frame-time graphs show spikes at chunk transitions with the mod installed and without it, making the effect visible.

Compatibility

Latest build for each game version and loader.

1.21.81.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

LitematicaA client-side schematic mod with extra features for creative mode work
Required
MaLiLibA library mod for client-side mods. Contains most of the common/shared code of masa's client mods, and adds some inter-operation support between the dependent mods.
Required

How it compares

Full comparison

Map-cache is a client-side mod for 1.21.8 under the MIT License. Anti Chat Lag is also client-side and MIT licensed, but targets 1.21.11 and addresses chat rather than schematic rendering. Litematica Filter is client-side, targets 1.21 – 26.2 and is not open source.

ModLoadersGame versionsEnvironmentUpdated
Litematica Chunk Lag FixFabric1.21.8Client-side only2026-06-25
Anti Chat LagFabric1.21.11Client-side only2026-08-03
Litematica FilterFabric1.21 – 26.2Client-side only2026-07-21

Questions

Does Litematica Chunk Lag Fix need Litematica?

Yes. Litematica and MaLiLib are both required dependencies and must be installed alongside the mod on Fabric.

Which game version does the Fabric file support?

The only listed game version is 1.21.8, with the 1.0.0 file published on 2026-06-25.

In the catalog

Litematica Chunk Lag Fix is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 17,695 mods support Minecraft 1.21.8.

Optimization mods3,545Fabric modsMods for 1.21.817,695

More from tvinch_

All projects
Litematica Inventory Highlight1.21.8 – 26.2Litematica Bobby Fix1.21.8PPL Global chat1.21.8Simple Voice HUD1.21.8Litematica Zone List1.21.8

Similar mods

Sodium1.16.3 – 26.3Iris Shaders1.16.5 – 26.3Entity Cullingb1.7.3 – 26.3FerriteCore1.16.5 – 26.3ImmediatelyFast1.18.2 – 26.3Sodium Extra1.16.2 – 26.3

What the author says

Reduces chunk-transition freezes on huge Litematica schematics by optimizing visible chunk cache updates.
tvinch_, on the Modrinth page

Official listing

Owner
tvinch_
Published
2026-06-25
Updated on Modrinth
2026-06-25
Facts verified
2026-10-15

Tags

OptimizationUtility
Open on ModrinthCompare