Knockback Optimizer

Knockback Optimizer

Makes knockback physics render client side instantly

by
9.9K Downloads
fabricdecoration
Rent Server with this Mod

Screenshots

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mod icon art

About this Mod

Knockback Optimizer


Discord Modrinth Source


How it works.

Predicts knockback client-side so hits/explosions look instant instead of delayed by ping.

Applies armor/shield/attributes (Blast Prot, Feather Falling, Knockback Resistance) to scale the predicted result closer to vanilla.

Presets swap many settings at once: Extreme = most accurate/heaviest, Super Lite = fastest/least accurate.


Showcase

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Now the visuals aren't perfect but they certainly do look pretty close to what it should look like, I do plan on updating the mod to improve it and you can always tweak the settings to find whats perfect for you

Is this allowed on servers?
I don't know, it should be perfectly fine since it's just a visual client side mod and doesn't actually offer any advantages, Just make sure to check with the server before using it.
and just dont test with it

Requires YACL and Mod Menu

have any questions?

need help?

want to report a bug?

or you just wanna be cool? ⭐

Then join my Discord!

Follow me!

NameMC

Available Versions

Knockback Optimizer 1.21.X+1.0.0release
MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric
May 12, 2026
Knockback Optimizer 1.0.0release
MC 1.21.11fabric
February 16, 2026

How to Install Knockback Optimizer on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

3

Install Mod

Open the mod browser in the dashboard and search for "Knockback Optimizer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+9 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Knockback 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 (1.21.11). You can switch loaders with one click in the panel.

Is Knockback Optimizer compatible with fabric?

Knockback Optimizer officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Knockback Optimizer – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Knockback 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.

Rent Modded Server

Install Knockback Optimizer with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Unsupported

Supported Versions

1.21.111.21.101.21.91.21.81.21.71.21.61.21.51.21.41.21.31.21.2+2 more