I will fix minecraft server lag and low fps in your modpack with spark and jvm tuning

A
alexjr28
A
alexjr28
Alex Jr
fix minecraft server lag and low fps in your modpack with spark and jvm tuning
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fix minecraft server lag and low fps in your modpack with spark and jvm tuning

About this gig

Minecraft lag and low FPS are usually fixable, and I start by measuring, not guessing. Whether it's a server whose TPS drops when players log in, or a modpack that stutters on your PC, I use Spark profiler reports to see exactly what's eating CPU and RAM, then tune the settings that matter.


WHAT I OPTIMIZE:

  • FPS, client performance
  • Sodium/Lithium/Iris setups
  • Low-end PC packs
  • mod loading/startup time
  • Server TPS, MSPT spikes
  • Spark profiler reports
  • Entity lag, mob spawns
  • spawn rates & ticking issues
  • Chunk loading, world generation lag & pre-generation
  • Redstone, hopper, farm & mob grinder lag
  • View distance & simulation distance
  • Paper, Purpur & Pufferfish configs
  • JVM arguments, Aikar's flags
  • RAM allocation & GC tuning
  • Server RAM, CPU & network bandwidth usage
  • Plugin database query optimization
  • Memory usage & out-of-memory errors


You get a short written report of what I found and what I changed.


Message me your Spark report or crash log, plus your server specs, before ordering.


  • Platform type

    • PC

  • Customization type

    • Building creation
    • Environment creation
    • Mod creation
    • Modding
    • Other

  • Plugins

    • Analytics
    • Animation
    • Chat
    • Localization
    • Other

  • Game type

    • 3D

  • Genre

    • Action
    • Adventure
    • Arcade
    • Fighting
    • Other

  • Game name

    • Minecraft

Get to know Alex Jr

Alex Jr

From crash log to custom build

  • FromUnited Kingdom
  • Member sinceMay 2026
  • Avg. response time1 hour

  • Languages

    English
Minecraft problems usually come in three kinds: something's broken, something's slow, or something doesn't exist yet. I work on all three. I fix crashing modpacks, tune lag and FPS, code custom mods, datapacks and plugins, set up servers, and build spawns and maps. I got here through five years of game development, and 3+ years of gameplay experience, and I'm done with an engineering degree. I like explaining what went wrong in plain words, so you know what changed. Tell me what's going on and let's sort it out.

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