Cutting XP Orb Lag in Minecraft with the Clumps Mod

Why XP Orbs Wreck Performance

Modded Minecraft is a balancing act. You stack content packs, then spend the next month installing optimization mods to keep the tick rate above embarrassing. Most veterans already know the drill with mob farms: hoppers grab the drops, chests store them, problem solved. The catch is that hoppers happily ignore XP orbs, and those little green blobs keep piling up around the kill chamber until your TPS starts whimpering.

This is the niche that Clumps fills, and it does it with refreshingly little fanfare.

What Clumps Actually Does

Clumps has exactly one job: when XP orbs spawn near each other, it merges them into a single entity. Fewer entities means fewer things for the server to track, which means smoother ticks for everyone connected. There are no commands, no config menus to wrestle with, no recipes. You add the jar, restart, and your farm stops crippling the server.

The mod is maintained by Jaredlll08, with CFGrafanaStats credited as the mascot. Worth knowing if you want to support the right people.

Step 1: Install Forge

Clumps runs on Forge, so that is the first hurdle. The process is mostly automated.

1. Grab the Forge installer for the Minecraft version you plan to run. Clumps tracks the popular 1.16.5 branch and several newer builds, so pick whichever matches your pack.
2. Run the downloaded `.jar` and choose Install Client in the popup.
3. Open the Minecraft launcher and switch your installation profile to Forge if it did not switch on its own.

Step 2: Download Clumps

With Forge ready, you can pull the mod itself.

• Go to the official CurseForge page for Clumps.
• Open the Files tab.
• Pick the build that matches your Minecraft version.
• Check the dependencies list. For Clumps it is empty, which is part of the charm.

Save the `.jar` somewhere you can find it again.

Step 3: Add the Mod to Your Client

For singleplayer or to join a modded server, the jar needs to live inside your local mods folder.

1. Open the Windows search bar and type `%appdata%`.
2. Enter the `.minecraft` directory, then open the `mods` folder.
3. Drop the Clumps `.jar` you downloaded into that folder.
4. Close everything and relaunch Minecraft on the Forge profile.

If Minecraft starts without yelling at you, the mod is loaded.

Step 4: Install Clumps on the Server

For a multiplayer setup, the server needs the same jar. Both sides must run Forge for this to work.

1. Open your server's control panel.
2. Stop the server before you change any files. Once it is fully offline, head into your file manager or FTP client and log in. Navigate to the `mods` folder.
3. Click Upload, then drag the Clumps jar into the window. Wait until the upload finishes at 100% (1/1 files).
4. Return to the server overview and start the server again.

Open the console in your panel while the server boots so you can spot any complaints in real time. A clean startup means Clumps is now active across the whole world.

How It Looks in Game

The mod runs entirely on its own. There are no items to craft and no toggles to flip. Nearby XP orbs gravitate toward each other and combine into a single bundle that still grants the same total experience when picked up.

The difference becomes obvious next to a vanilla mob grinder. Hundreds of individual orbs become a handful of compact ones, and the lag spikes that used to hit when somebody finally walked into the loot area disappear.

Worth Installing?

For a mod with one function, Clumps punches well above its weight. It costs you nothing in gameplay terms and pays you back in stable tick rates the moment your farms start producing real volume. If your server hosts more than a handful of players, or anyone is running an XP grinder, this is one of the cheapest wins you can drop into a modpack. Install it, forget about it, and let your TPS recover.