CurseForge · Minecraft mod
Kle's Render Layer Optimizer
Removes configured rendering layers to increase performance when rendering items, armor, weapons, etc.
Quick answer
Which Kle's Render Layer Optimizer release matches 1.16.2?
Kle's Render Layer Optimizer v0.2.1 targets 1.16.3, 1.17.1, 1.21.2-Snapshot with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Kle's Render Layer Optimizer required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Kle's Render Layer Optimizer v0.2.1 need?
v0.2.1 on 1.16.2. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Kle's Render Layer Optimizer without breaking your instance.
Built for Kle's Render Layer Optimizer v0.2.1 on 1.16.2. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use v0.2.1. It targets 1.16.3, 1.17.1, 1.21.2-Snapshot with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside v0.2.1. It opens that exact file at the source.
About this project
What does Kle's Render Layer Optimizer add?
Kle's Render Layer Optimizer
Kle's Render Layer Optimizer looks to fix the issues of Minecraft's rendering layers on items and armor. Minecraft's rendering layer tanks your fps when many items or players are on your screen.
What are rendering layers and what kind of performance hit do they cause?
Rendering layers is Minecraft's system to break down how entities, items, and models are drawn for performance. These are the different rendering layers this mod looks to tackle:
- glint
- armor trim
- pattern layers (banners, shields)
- color layers (leather armor, tipped arrows, potions, etc)
Each layer is another thing for your gpu to draw, from testing, 10 enchanted helmets (1 layer each) drops your fps by 20-25 compared to 10 non-enchanted helmets.

What does this mod do at it's current state?
Right now it can only disable the glint layer from being rendered, this greatly improves performance on 1000 armor stands w/ enchanted armor from 36fps to 47fps (very unrealistic scenario) but it's only the start of what I'd like this mod to do. Forge, neoforge, and quilt will come in later updates as well as the other rendering layers.
examples of this mod in action:
(I chose 100 armor stands for these tests because 100 is a more daily occurance than 1000, only mods installed is what's required [no other optimization mods], works with all other optimization mods)
100 armor stands not-enchanted (baseline) - 291fps

100 armor stands enchanted (mod not enabled) - 261fps

100 armor stands enchanted (mod enabled) - 293fps

performance bugs this mod tackles:
- https://bugs-legacy.mojang.com/browse/MC-233604
- https://bugs-legacy.mojang.com/browse/MC-233605
- https://bugs-legacy.mojang.com/browse/MC-166101
toggles:
- Items: fishing rod, books, tools (flint & steel, carrot on a stick, brush, compass, shears, etc.)
- Weapons: swords, tridents, bows, crossbows, axes, maces, and shields.
- Armor: player/animal armor and elytra.
- Other: all items that fall outside these categories (i.e. modded items, custom enchanted items like strength 5 dirt)
Requirements
- Fabric API
- Cloth Config API
- (optional) Mod Menu
Project description from CurseForge.
Pick your setup
Kle's Render Layer Optimizer by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.11
1 loader build1.21.10
1 loader build1.21.9-snapshot
1 loader build1.21.9
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6-snapshot
1 loader build1.21.6
1 loader build1.21.5-Snapshot
1 loader build1.21.5
1 loader build1.21.4-Snapshot
1 loader buildShowing the newest 12 of 50 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Kle's Render Layer Optimizer versions and loaders
v0.2.1
krlo-1.16.2-1.21.11--0.2.1.jar
11 Dec 2025
v0.2.0
krlo-1.16.2-1.21.11--0.2.0.jar
9 Dec 2025
Looking for an older file? The official CurseForge project page is in Resources.