Visceral Heap Fix

Visceral Heap Fix

Fixes the tendon generation in BOP's Visceral Heap biome from becoming "dashed" or disconnected when paired with mods that increase the Nether height.

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328 Downloads
forgeneoforgeutilityworldgen
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Screenshots

Before -> After

About this Mod

Due to a lack of time, I am no longer updating this mod

The Issue

If you install Biomes O' Plenty, along with a mod that increases the Nether's height like Incendium or Amplified Nether, you'll notice that if a Visceral Heap biome spawns close to the floor, some of the tendons it generates will either get cut off halfway or will get stretched out so much that some blocks aren't placed, leaving a disconnected, and broken shape.

The Fix

This mod uses a mixin to slighly change the way these features are generated and attempts to fix the above issues. While this should fix the broken tendons problem, the features can still stop halfway though rare enough to not be a problem.

Many settings related to the generation of these features have also been exposed into the config, letting you fine tune them to your liking.

I do not recommend this mod if you're not using a mod that increases the Nether height since it is unnecessary and may cause performance issues.

Modpack Use

Feel free to include this mod in your own packs. Just don’t expect full support since I don’t mod Minecraft regularly.

Available Versions

Visceral Heap Fix - v2.0.2 - mc1.20.1release
MC 1.20.1forge
February 3, 2026
Visceral Heap Fix - v2.0.2 - mc1.21.1release
MC 1.21.1neoforge
February 3, 2026
Visceral Heap Fix - v2.0.0 - mc1.20.1release
MC 1.20.1forge
January 29, 2026
Visceral Heap Fix - v2.0.0 - mc1.21.1release
MC 1.21.1neoforge
January 23, 2026
Visceral Heap Fix - v1.1.0 - mc1.20.1release
MC 1.20.1forge
September 3, 2025

How to Install Visceral Heap Fix on Your Server

1

Order Server

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

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.1).

3

Install Mod

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

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.1, 1.20.1

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Visceral Heap Fix server crashes on startup – what to do?

Most common cause: wrong forge 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 (1.21.1). You can switch loaders with one click in the panel.

Is Visceral Heap Fix compatible with forge and neoforge?

Visceral Heap Fix officially supports forge, neoforge for Minecraft 1.21.1, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Visceral Heap Fix – how to optimize performance?

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

Rent Modded Server

Install Visceral Heap Fix with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
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NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.11.20.1