HTP CIT Resewn Optimizer
Modby HTP
A client-side performance patch that fixes memory leaks and reduces lag caused by the mod CIT Resewn
Type
Mod
CurseForge Downloads
1,358,525
CurseForge ID
Modrinth Downloads
395,047
Modrinth ID
Last Updated
Nov 6, 2026
Description
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
Compatibility
Mod Loaders
Game Versions
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
As an Amazon Associate I earn from qualifying purchases.
Similar Mods
Game Menu Mod Option [Forge]
MOD settings to the game menu as before 1.12.2
Thermoo
Temperature and Environment library mod for Fabric and Quilt. Used by Frostiful and Scorchful.
FTB Money (Forge)
Adds money, shops and trading
Enhanced Block Entities
Improve FPS with block entities, and make them customizable with resource packs
Physics Mod
Adds physics to Mobs and Blocks!
Human Companions
A mod that adds human companions like a knight and archer to help you on your journey