Tested technical baseline
Server Optimization is available as a launchable server configuration with fabric on Minecraft 1.21.1.
Ready-to-launch Minecraft server
Create a Server Optimization Server
Server Optimization bundles proven server-side performance mods for Fabric — your server runs smoother while friends join with the completely normal vanilla client.
from €4.87/month
- 4 GB RAM recommended
- Boot tested
- Cancel monthly
Boot tested · Last tested: .
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Game, loader and tested preset are preselected and remain adjustable.
What is the Server Optimization pack?
The pack installs exclusively server-side optimization mods such as lithium, c2me, ferritecore, servercore and spark — no client renderers, no gameplay changes.
Ideal for vanilla survival with friends: the game feel stays untouched while tick rate, chunk generation and memory usage benefit. The actual effect depends on world, configuration and load.
The magic is invisible: lithium streamlines the game logic, c2me parallelises chunk generation, servercore relieves the tick — and with spark you can check for yourself where the time goes.
Nothing changes for your players: everyone joins with the plain vanilla client, no mod download, no launcher hurdles — ideal if you want to run a pure vanilla server with maximum smoothness.
Recommended setup
We recommend at least 4 GB RAM on Minecraft 1.21.1. The pack is boot-verified on our infrastructure; the optimization effect depends on world, configuration and load.
What to expect in the pack
Vanilla client is enough
All mods run server-side — players connect with the normal Minecraft Java client, no installation needed.
Steadier tick rate
lithium and servercore optimize the game logic so the server stays smooth even with several players.
Faster chunks
c2me parallelizes chunk generation — exploring new terrain causes noticeably less stutter.
Profiling included
With spark you can always see what costs performance on your server — ideal for fine-tuning.
Modpack quality status
Available and boot-tested- Minecraft version
- 1.21.1
- Loader version
- Fabric 0.16.14
- Minimum RAM
- 4 GB
- Last tested
- 24. Aug 2026
Known issues
None known
Frequently asked questions
Does the button use the matching configuration?
Yes. The wizard preselects the matching loader; modpack pages also load only the verified featured pack.
Can I change version and RAM later?
Yes. Always check compatibility and create a backup before changing versions.
Do players need to install anything?
No. Every mod in the pack is server-side — players join with the unmodified Minecraft Java client.
Does the pack change gameplay?
No. These are pure optimization mods with no new items, blocks or mechanics — vanilla stays vanilla.
Can I add more mods?
Yes. You can add Fabric-compatible mods through the file manager. Check compatibility and create a backup first.