
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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About this Mod
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
How to Install OptiCores on Your Client
Install the Mod Loader Locally
Install fabric for your local Minecraft version.
Download the Matching File
Choose the OptiCores file for fabric and Minecraft 26.2.
Install Mod
Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.
Compatibility
Mod Loaders
Minecraft Versions
26.2, 26.1.2, 26.1.1 (+18 more)
Server-side
✗ UnsupportedRecommended 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.
Similar Mods
Minecraft Server for Your Group
OptiCores stays on your client. Host a compatible world for your group.

