OptiCores

OptiCores

A client-side rendering optimization mod for (Neo)Forge and Fabric, featuring asynchronous culling specifically tuned for integrated graphics (Intel UHD/Iris Xe).

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26.0K Downloads
fabricforgeneoforgegame-mechanicsoptimizationtechnology
Configure a Compatible Minecraft Server

Screenshots

Performance without shaders on the latest version of Neoforge
Opticores mod with shaders
Opticores mod without shaders

About this Mod

A side-by-side Minecraft comparison showing higher FPS without shaders and better graphics with shaders.
kofi-plural-alt


Thank you for the support!, Now i am going to continue working on the Opticores project.


Opticore: Asynchronous Rendering Optimization
Opticore is a client-side companion mod for Embeddium and Sodium on NeoForge 1.21.1. It is specifically designed to alleviate the "Main Thread" bottlenecking found on systems using integrated graphics (Intel UHD, Iris Xe, and mobile CPUs).

Core Functionality

  • Asynchronous Culling Pipeline: Unlike standard culling methods that run on the main render thread, Opticore offloads Euclidean distance and Frustum-intersection math to a background worker thread.

  • Concurrent Data Management: Rendering visibility results are stored in a thread-safe ConcurrentHashMap, allowing for O(1) lookups during the render cycle with near-zero latency.

  • Dynamic Load Throttling: The mod monitors getSectionStatistics() to detect heavy chunk-loading periods. During high I/O spikes (e.g., world joining or teleporting), the mod temporarily reduces entity rendering overhead to prioritize terrain generation.

  • Technical Compatibility: Includes safety bypasses for custom block entity renderers (such as those in the Create Mod) and integrates with Distant Horizons to prevent culling during LOD baking passes.

Performance Impact
Opticore is most effective in environments with high entity counts (villages, farms, or modded dimensions). By offloading culling logic, it helps stabilize frame times and reduces "stuttering" during world exploration on 2-core and 4-core processors.

Available Versions

OptiCores 1.0.7release
MC 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6forge
August 10, 2026
OptiCores 1.0.9release
MC 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, 1.21.11, 26.1, 26.1.1, 26.1.2, 26.2neoforge
August 7, 2026
OptiCores 1.1.0release
MC 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
August 4, 2026
OptiCores 1.0.9release
MC 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
July 21, 2026
OptiCores 1.0.8release
MC 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
June 20, 2026

How to Install OptiCores on Your Client

1

Install the Mod Loader Locally

Install fabric for your local Minecraft version.

2

Download the Matching File

Choose the OptiCores file for fabric and Minecraft 26.2.

3

Install Mod

Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

26.2, 26.1.2, 26.1.1 (+18 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Does OptiCores need to be installed on the Minecraft server?

No. Modrinth marks OptiCores as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.

Which version and loader does OptiCores require?

Use a file for fabric, forge, neoforge and your exact Minecraft version. Supported versions include 26.2, 26.1.2, 26.1.1. Files for different loaders are not interchangeable.

OptiCores is not working – what should I check?

First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.

Minecraft Server for Your Group

OptiCores stays on your client. Host a compatible world for your group.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
Create Server Now
Client Compatibility Guide
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Unsupported

Supported Versions

26.226.1.226.1.126.11.21.111.21.101.21.91.21.81.21.71.21.6+11 more