Ashen Legacy

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Performance Tweaks ​

Optimising performance for a large, content-heavy modpack like Ashen Legacy is key to ensuring smooth gameplay, especially in multiplayer.

This guide provides practical, high-impact tweaks and recommendations.

🔭 View Distance & Simulation Settings ​

Reducing the number of chunks the server and players interact with is one of the easiest ways to cut down on lag:

  • View Distance: Considering setting lower. Higher values significantly increase CPU and RAM usage.

  • Simulation Distance: Considering settinglower to limit how far away entities and block ticks are processed.

Adjust these in server.properties:

properties
view-distance=18
simulation-distance=12

🌍 Pre-generating the World ​

Use Chunk-Pregenerator to pre-load and save terrain before players begin:

Benefits: ​

  • Avoids stutter and CPU spikes from real-time generation

  • Ensures larger structures like YUNG’s Dungeons are fully generated

Usage: ​

bash
/pregen start gen radius GenExample CIRCLE 0 0 250

This starts a 250 Radius Circle Pregeneration task in your current dimension with the TaskId 'GenExample'. Further documentation is available here.

Run during off-hours or before public launch.

📊 Using Spark for Profiling ​

Install Spark to analyze TPS drops, memory use, and entity load:

  • Use /spark profiler during lag spikes

  • Analyze data on the web UI: spark.lucko.me

  • Identify mod-related bottlenecks, excessive tile entities, or broken mob farms

  • Run a 30-second sample during peak activity

  • Compare chunk vs entity vs tick impact

🔁 Automatic Restarts ​

Long uptime = higher memory usage. Use restart scripts or mods like FTB Essentials, OpenModularServerUtils, or a panel scheduler (Pterodactyl/AMP) to auto-restart every 6–12 hours.

Why it matters: ​

  • Frees up RAM from leaked references or excessive caching

  • Resets mob cap anomalies and garbage collection issues

💡 Extra Tips ​

  • Use the bundled mods, such as FerriteCore for memory and tick optimisations.

  • Reduce spawn caps in rarely visited dimensions.

  • Clean up dropped items and entities regularly.

  • Encourage players to avoid leaving chunkloaders or mob farms running 24/7.

With these optimisations, you’ll get a far smoother experience—without sacrificing the ambition or complexity of the Ashen Legacy experience.

Thanks for your support ❤️