
Immersive Fixes
Addon for Immersive Engineering, backporting critical bug fixes and minor content to 1.20.1
Screenshots

About this Mod
Overview
A simple Immersive Engineering addon to backport critical bug fixes and minor content to 1.20.1.
Note that in some cases I am not the one who patched these issues, BluSunrize (and the IE team at large) is. I merely backport the fixes to 1.20.1 with permission, so the IE dev team can pursue their goal of focusing on new versions of Minecraft. Elsewhere, I and other contributors have written entirely new fixes that don't rely on IE's code. Do not be annoyed at Blu and co. for not implementing these fixes themselves, as back support is time consuming and difficult for a project of IE's scale.
Currently Supporting:
Fixes of reported IE problems:
Fix: issue #5906: Fluids no longer destroy multiblocks.
Fix: issue #6149: Arc Furnaces give the correct percentage of secondary outputs (was previously inverted).
Fix: issue #6305: Coke Oven Exploit
Fix: issues #4917, #5440, #5909, #5933, and #6203 about logic errors with the Diesel Generator. Diesel Generators now don't confuse water for fuel, don't run infinitely, properly consume the right amount of fuel, and more. Read these issues on IE's repo for detail (or check the issue on my repo to find hyperlinks to each of these issues).
Fix: issue #6205: ear defenders not working.
Other fixes:
Fixed dark triangle-shaped patches appearing on machines under normal lighting
Fixed parts of machine surfaces rendering inside-out or invisible from certain angles
Fixed machines showing outdated/stale textures after reloading resource packs via F3+T
Improved rendering performance: large machines no longer draw the same geometry up to 7 times over
Have some features or fixes you'd like to see in 1.20.1? Please let me know via the Issues page on the repository or my discord here.
Credits
Many thanks to Nerf Ashton for making this mod's icon! Thanks also to IFx's other contributor, tgstyle, for numerous client sided fixes and general polishing!
Licensing
Immersive Fixes' codebase should be considered ARR for any and all purposes unless I explicitly grant your project a waiver. I would, however, love to grant as many of those as possible. Additionally, contribution to Immersive Fixes is welcome and encouraged! Collaboration on creating fixes is also welcome. If you are looking for a waiver or looking to contribute or collaborate, please directly contact me through Discord, GitHub, or CurseForge. Please note that waivers will only be given out if you can demonstrate that they are the only reasonable remedy to the current problem you're facing.
Available Versions
How to Install Immersive Fixes on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "Immersive Fixes". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Immersive Fixes 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 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.
Is Immersive Fixes compatible with forge?
Immersive Fixes officially supports forge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Immersive Fixes – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Immersive Fixes 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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