Description
Here’s how you can optimize your Minecraft server to stop lag, improve performance, and have an overall better experience playing with your friends.
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About this video: If your Minecraft server is lagging, this video shows you how to optimize it the right way. Instead of guessing at random settings, adding every lag plugin you can find, or spending hours troubleshooting the wrong thing, we walk through the main areas that actually affect Minecraft server performance. By the end of this, you will know how to reduce lag, find what is causing it, and make smarter decisions for your server moving forward.
To get started, we need to talk about chunks. A lot of Minecraft server lag happens when players are exploring and the server has to generate new terrain while everyone is online. Chunk pregeneration fixes that by creating the world ahead of time. In this video, we use Chunky for this. You can set your center point with chunky center, choose how far out you want to pregenerate with chunky radius, and then start the process with chunky start.
From there, we look at the foundation of your server, which is the server software itself. If you are running a vanilla server, moving to Paper can make a big difference because Paper is built with performance in mind. However, Paper is for plugin-based servers, not modded servers. If you are using Fabric mods, Lithium is a better fit because it improves server performance while still letting you keep your Fabric setup.
Next, we go over RAM and hardware. You generally want at least 4GB of RAM for a Minecraft server, and if you are running mods, 8GB or more is a much better starting point. RAM is not the only thing that matters though. Your CPU, storage speed, and overall hosting setup all play a role in how well your server runs, especially when players are exploring, building farms, using redstone, or loading lots of entities.
After that, we get into server file optimization. Your server configuration files control things like view distance, simulation distance, entities, mob behavior, and other settings that can create lag when they are left too high. We have a full server optimization guide linked in the description above that goes through those settings in more detail, and this is one of the best places to make long-term performance improvements.
With that, you also need a way to diagnose lag instead of just hoping a change worked. That is where Spark comes in. Spark lets you check your TPS with /tps, and you can run a performance profile with /spark profiler start and /spark profiler stop. This helps you see what is actually slowing down your server, whether that is a plugin, mod, entity issue, chunk problem, or something else entirely.
Finally, we take a look at LagFixer. This is not something everyone agrees on, but it can be useful if you want a faster, module-based way to reduce lag. It includes options for mob AI, entity limits, explosions, dropped items, redstone, vehicles, elytra and trident usage, and console filtering. Since you can enable and disable modules, you can test what helps your server without blindly changing everything at once.
And now you know how to optimize a Minecraft server and reduce lag. If you have any questions, let us know in the comments. We will try our best to help you out.
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