HTP CIT Resewn Optimizer
A client-side performance patch that fixes memory leaks and reduces lag caused by the mod CIT Resewn
About this Mod
CIT Resewn has two issues in large modpacks. First, it re-evaluates custom item textures every frame even when nothing has changed — this causes unnecessary CPU usage when browsing large inventories or EMI item grids. Second, it leaks over 1 GB of RAM per session by allocating objects into every ItemStack that are never freed.
This is a patch for https://modrinth.com/mod/cit-resewn
What does HTP CITOptimizer do?
Caches CIT evaluation results so repeat lookups are skipped, and fixes a massive memory leak.
Significantly reduced GC pressure from eliminated per-frame allocations.
Lower CPU usage when browsing large inventories or EMI item grids.
Your client will no longer freeze, crash, or lag after hours of gameplay requiring a restart due to CITResewn.
We were experiencing memory climbing steadily until it hits the heap limit causing stutters multiple times per day most noticable when relogging on servers.
Before HTP CITOptimizer:
After HTP CITOptimizer:
Created by the team at https://www.hacktheplanet.now
Available Versions
How to Install HTP CIT Resewn Optimizer 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 (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "HTP CIT Resewn Optimizer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
HTP CIT Resewn Optimizer 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 (1.20.1). You can switch loaders with one click in the panel.
Is HTP CIT Resewn Optimizer compatible with fabric?
HTP CIT Resewn Optimizer officially supports fabric for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with HTP CIT Resewn Optimizer – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if HTP CIT Resewn Optimizer 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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Install HTP CIT Resewn Optimizer with just one click on your server.