Quarry Opt
If you have ever run a large modpack on Minecraft 1.12.2, you know the pain of a laggy server. Extra Utilities 2 Quantum Quarries are notorious for hammering the server thread, especially once you have several of them running at once. Quarry Opt is a server-side performance patch built specifically to fix that problem, and in matched testing it reduced measured Quantum Quarry server-thread cost by roughly 40%. That is a serious improvement for a single add-on, and it does it without changing how your quarries actually behave.
What Quarry Opt Actually Does
Quarry Opt is not a content mod. It does not add new blocks, items, or machines. Instead, it targets the internal work that Quantum Quarries perform every tick and trims the expensive parts. The patch focuses on three main areas:
- Repeated filter deserialization, which previously happened far more often than necessary
- Item-drop capture, cutting down on redundant handling of dropped resources
- Quarry chunk-reset work, which could spike server load during operation
The important part is what stays the same. Mining speed, yield, energy usage, filtering, and normal quarry behavior are all preserved. Your Quantum Quarries will still mine at the same rate and produce the same output. The only thing that changes is how much server-thread time they consume while doing it.
Server-Side Only: Clients Do Not Need the Mod
One of the best things about Quarry Opt is that it is entirely server-side. When it is installed on a server, clients do not need the mod at all. Players can connect with a vanilla-style client setup and never notice a difference, aside from the improved performance. This makes it easy to roll out on an existing server without asking every player to update their mod list.
If you manage a modded server and want a frictionless way to keep everything in sync, the foxygame.net launcher is worth a look. Its add-on catalog lets you pull in Quarry Opt alongside the rest of your server stack in a couple of clicks, and the launcher handles version compatibility checks so you are not left guessing whether your MixinBooter build is new enough.
Requirements and Supported Versions
Quarry Opt is built for a specific setup, so check your versions before you download Quarry Opt. The requirements are:
- Minecraft 1.12.2
- Extra Utilities 2 version 1.9.9
- MixinBooter 10.7 or a compatible build
- Originally tested on Forge 14.23.5.2860
Because it relies on MixinBooter, Quarry Opt is a Forge-side patch for the 1.12.2 era. There is no Fabric or NeoForge version, and there is no plan for one in the original release. Source code is available on GitHub if you want to inspect exactly what the patch changes.
How to Install Quarry Opt for Minecraft
Getting Quarry Opt running is straightforward, but the order matters. Here is the process for a typical Forge server:
- Confirm your server runs Minecraft 1.12.2 with Forge 14.23.5.2860 or a compatible build
- Install MixinBooter 10.7 or newer into your mods folder
- Add Extra Utilities 2 version 1.9.9 if it is not already present
- Drop the Quarry Opt jar into the same mods folder
- Restart the server and check the log for load errors
That is the whole how to install process. There is nothing to configure in-game, no commands to run, and no client-side steps. If the server starts cleanly, the patch is active.
A Note on Modpack Compatibility
Quarry Opt was originally developed and tested for the Divine Journey 2 modpack. That means it is known to work well in that environment, but compatibility with other modpacks is not guaranteed. If you run a different pack, test it on a copy of your world first. Conflicts are unlikely given how narrow the patch is, but 1.12.2 modpacks are famously tangled, so a quick test run is always wise.
Why It Matters for Big Bases
Quantum Quarries are usually the backbone of late-game resource generation. Once you have three or four running, the server-thread cost adds up fast, and tick times start to slip. A 40% reduction in that cost can be the difference between a smooth 20 TPS server and one that stutters whenever your quarries fire. For players pushing deep into endgame automation, that headroom is valuable.
Final Thoughts
Quarry Opt is a focused, no-frills performance patch that does exactly one job and does it well. It keeps your Quantum Quarries behaving normally while cutting their server-thread footprint by around 40%, and because it is server-side only, your players never have to install anything. If you run a Minecraft 1.12.2 Forge server with Extra Utilities 2 and you are tired of quarry lag, this is one of the easiest wins available. Just match the required versions, drop it in, and enjoy the extra breathing room.