Easy Server Optimizer(ESO)
by _dynobot
Easy Server Optimizer, published as ESO, is a server-side mod that monitors server TPS and applies optimization rules in real time on Forge and NeoForge.
What it does
Once installed on a dedicated server, ESO watches the server tick rate and adjusts its optimizations as performance changes. At normal TPS it applies gentle scaling; with a minor drop it scales rendering and simulation distances; with a severe drop it applies stronger rules; and at an extreme drop it activates emergency safeguards, including a temporary pause of the weather and daylight cycle. Its entity limiting caps mobs per chunk and clears projectile debris such as arrows and tridents before they pile up and cause lag.
The mod is required only on the server. Players joining a dedicated server or a multiplayer world hosted by someone else need nothing installed. A host who runs a singleplayer world with Open to LAN can gain the optimizations for anyone who joins, and the manual opt commands are available for tuning but are never required; the adaptive mode turns itself off when those commands are used. ESO is built on a zero-dependency library, so it needs no other mod. It is published for Forge and NeoForge across the 1.18.2 – 1.21.8 range, with builds for 1.18.2, 1.20.1, 1.21.1 and 1.21.8, under All rights reserved.
Key features
Adaptive TPS optimization
The mod reads server TPS continuously and changes its optimization level to match, without a restart.
Entity mob limiter
Mobs are capped per chunk, and projectile entities are removed automatically before they accumulate.
Item cleanup timing
Lifespans are set per item type, so dropped items despawn on a schedule instead of causing tick spikes.
Distance control in singleplayer
In singleplayer, render distance is set through the client's Video Settings rather than by the mod.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does ESO need other mods installed?
Do players need ESO on their own game?
Which versions does ESO support?
In the catalog
Easy Server Optimizer(ESO) is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 17,695 mods support Minecraft 1.21.8.
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What the author says
🛡️ Server-side Only: Required only on the server (dedicated server or the host of a multiplayer world). Clients joining someone else's server do not need to install it — but if you're the host (singleplayer, or "Open to LAN"), you're actually running the server yourself, so installing it there gives you the full…
Official listing
- Modrinth page
- modrinth.com/mod/easyserveroptimizer
- Owner
- _dynobot
- Published
- 2025-09-08
- Updated on Modrinth
- 2026-08-23
- Facts verified
- 2026-10-15
