LinxfaX's Crystal OptimizerMods · 1.19 – 1.21This is my 2nd project to serve Crystal Optimzier mod for 1.19.4-1.21.11, this mod almost works the same as Marlow's Crystal Optimizer with little different…

Zero delay. Absolutely no delay. Delay Optimizer completely eliminates every bit of action and input delay—giving you instant, seamless responsiveness on any…
Zero delay. Absolutely no delay. Delay Optimizer completely eliminates every bit of action and input delay—giving you instant, seamless responsiveness on any…
Delay Optimizer is a resource made by gsd. It supports Minecraft 1.21. It has been downloaded 78 times on Modrinth. The last update came out on Oct 17, 2026.
The newest is 1.0.0, released on Oct 17, 2026. It is made for Minecraft 1.21.11. It runs on Fabric. The download is 41 KB.
| Version | Released | Minecraft | Type |
|---|---|---|---|
1.0.0 | Oct 17, 2026 | 1.21.11 | Release |
Delay Optimizer is a client-side Fabric mod designed to improve input responsiveness and reduce perceived action latency during competitive PvP and movement.
By leveraging client-side prediction and optimized packet flushing, it provides smoother, more responsive feedback for common game actions.
Written by gsd. Read it with pictures on Modrinth.
This mod runs only on your own game. Servers do not need it, so you can use it on any server.
Install Fabric for Minecraft 1.21.
Download the .jar file from Modrinth and put it in the mods folder of your .minecraft directory.
Start Minecraft with the Fabric profile.
With the CraftRank Launcher you can skip these steps: open Mods, search for Delay Optimizer and click Install.
| Resource | Downloads | Versions | Last update | Price |
|---|---|---|---|---|
| 78 | 1.21 | 24 days ago | Free | |
| 95 | 1.19 – 1.21 | Aug 22, 2026 | Free | |
| 8.7M | 1.18 – 26.x | 2 days ago | Free | |
| 5.3M | 1.19 – 26.x | Oct 7, 2026 | Free |
Not yet. The newest version it supports is Minecraft 1.21.
Yes. Delay Optimizer is free to download from Modrinth.
Client-side. Delay Optimizer goes in your own mods folder and works on any server, including servers without mods.
Yes. The last update came out in the past day.
The closest ones are LinxfaX's Crystal Optimizer, Not Enough Recipe Book and Marlow's Crystal Optimizer. Compare all alternatives
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