
Modrinth · Minecraft mod
Attack Cooldown Sync
fixes the noticable desync of your attack cooldown when swapping items (especially obvious on high ping)
Quick answer
Which Attack Cooldown Sync release should I use?
Attack Cooldown Sync 2.0 targets 26.1.2 with Fabric. It must be installed on the client. Do not install it on the dedicated server. No extra mods listed for this file.
Where it goes
Is Attack Cooldown Sync required on the client, server, or both?
It must be installed on the client. Do not install it on the dedicated server.
This file is marked client-only.
What else does Attack Cooldown Sync 2.0 need?
2.0. Change the file and its required mods may change too.
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 Attack Cooldown Sync without breaking your instance.
Built for Attack Cooldown Sync 2.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 2.0. It targets 26.1.2 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
It must be installed on the client. Do not install it on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 2.0. It opens that exact file at the source.
About this project
What does Attack Cooldown Sync add?
Fixes the noticable desync of your attack cooldown when swapping items.
When swapping items, your attack speed is not updated until the server sends the packet to change your attributes.
This mod predicts the attack speed and sets it once you swap items to make up for the delay between server and client.
Project description from Modrinth.
Pick your setup
Attack Cooldown Sync by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.8
1 loader build1.21.4
1 loader build1.21.1
1 loader build1.20.4
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Attack Cooldown Sync versions and loaders
2.0
AttackCooldownSync-2.0.jar
16 Jun 2026
2.0
hitcooldownsync-2.0.jar
16 Jun 2026
1.0
hitcooldownsync-1.0-1.21.8.jar
30 Jul 2025
1.0
hitcooldownsync-1.0-1.21.4.jar
30 Jul 2025
1.0
hitcooldownsync-1.0-1.21.1.jar
30 Jul 2025
1.0
hitcooldownsync-1.0-1.20.4.jar
30 Jul 2025
0.1
hitcooldownsync-1.0.jar
24 Dec 2024
Looking for an older file? The official Modrinth project page is in Resources.