OptiFabric Origins
A mod that allows running OptiFine on 1.14.4 and 1.15.2 Fabric. Bringing OptiFabric back to its roots.
Screenshots
About this Mod
OptiFabric Origins (1.14.4 & 1.15.2)
These are the old versions of 1.14.4 and 1.15.2 OptiFabric, updated to work again with the latest Fabric Loader and latest supported Fabric API. I've used code and fixes from later versions of the official OptiFabric to patch these older ones. Full credit goes to modmuss50 for creating OptiFabric and Chocohead for maintaining it, without them this wouldn't have been possible.
For later Minecraft versions see: https://www.curseforge.com/minecraft/mc-mods/optifabric
For even older Minecraft versions see: https://modrinth.com/mod/legacy-optifabric
Important:
- This project does not contain OptiFine, you must download it separately!
- This project is not related or supported by either Fabric or OptiFine.
Installing:
After installing Fabric for 1.14.4 or 1.15.2, you will need to place the corresponding OptiFabric Origins mod jar as well as the OptiFine jar from the official OptiFine website into your mods folder.
See the following table for Fabric Loader support:
| Fabric Loader | mc 1.14.4 | mc 1.15.2 |
|---|---|---|
| 0.16.14+ | v3.0.1 | v3.1.1 |
| 0.15.x - 0.16.13 | v2.0.1 | v2.1.1 |
| 0.9.x - 0.14.x | v1.0.1 | v1.1.1 |
Available Versions
How to Install OptiFabric Origins on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.15.2).
Install Mod
Open the mod browser in the dashboard and search for "OptiFabric Origins". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.15.2, 1.14.4
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
OptiFabric Origins 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 3 GB RAM is allocated and the loader matches the mod version (1.15.2). You can switch loaders with one click in the panel.
Is OptiFabric Origins compatible with fabric?
OptiFabric Origins officially supports fabric for Minecraft 1.15.2, 1.14.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with OptiFabric Origins – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if OptiFabric Origins 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.
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Rent Modded Server
Install OptiFabric Origins with just one click on your server.