If your server is experiencing lag, chunk-loading delays, or low TPS, this guide is for you. Here is our expert strategy for identifying bottlenecks and fixing performance issues in 2026.

1. Choosing the Right Jar

Avoid Vanilla! Use PaperMC or even better, Purpur. These jars are highly optimized and allow for deep configuration.

2. Entity Capping

Entities are often the #1 cause of lag. Use plugins to keep mob counts under control and optimize tick rates.

3. View Distance

The most impactful setting for RAM and CPU. Set view distance to 6-8 and simulation distance to 4-6 for optimal performance.

4. Chunk Pregeneration

Pregenerate your world before players join. This removes the CPU burden of generating new terrain while players are online.

5. JVM Flag Tuning

Aikar's Flags are still the standard in 2026. Ensure your startup flags are correctly configured for your RAM allocation.