InstaLoad

Makes world swapping feel nearly instant.

266 Downloads

fabricoptimizationutilityworldgen

Rent Server with this Mod

About this Mod

InstaLoad

InstaLoad is a Fabric mod for Minecraft 1.21.x focused on faster and smoother world transitions.

Features

Reduces the spawn region warmup from 441 chunks to 1 chunk.
Skips blocking loading UI during join/respawn/reconfiguration world swaps.
Keeps network/world-loading logic running while removing the blocking screen layer.

Notes

Compatible with Minecraft 1.21.x.
Verified on 1.21.8+
This project is an independent 1.21.x implementation inspired by the "Optimized World Swapping" of Patcher in 1.8.9 and Fastload in 1.18-1.20.

Available Versions

InstaLoad 1.1.1+1.21release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric

April 13, 2026

InstaLoad 1.1.0+1.21release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric

April 12, 2026

How to Install InstaLoad on Your Server

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+9 more)

Server-side

~ Optional

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

InstaLoad 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 4 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is InstaLoad compatible with fabric?

InstaLoad officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with InstaLoad – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if InstaLoad 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.