Cut lag from a big XP farm using Clumps Mod

Clumps Mod is built for XP farms where hundreds of orbs pile up in one spot and drag down the game. It needs no items, blocks or commands. Once it is installed, merging happens automatically.

Set up the farm

1. Build or use your mob grinder as usual. Keep the kill zone compact so orbs spawn close together.

2. Let the farm run. Orbs that spawn near each other merge into one entity that holds their combined XP value.

3. Keep the collection point small. Orbs that stay in a tight area merge best, so a single drop spot works better than spreading orbs along a long channel.

Check that it's helping

• Open the debug screen (F3) and watch the entity count while the farm runs. With the mod, the count should stay far lower than the number of mobs killed would suggest.
• Compare against a world without the mod if you want proof. The difference shows most when a farm has been running unattended.

Tips

• Don't leave orbs sitting for a long time. Collect regularly so merged orbs don't pile up.
• The total XP is preserved when orbs merge. You aren't losing experience for the performance gain, only reducing the number of entities.