
Fastium (Ultra Fast)
Extreme amount of optimization that doesn't affect visuals
About this Modpack

https://www.youtube.com/watch?v=BbkAQ_vHNtA
Important
There is a VULKAN version that replaces some mods, THIS VERSION IS AN EXPERIMENTAL VERSION THAT USES VULKAN INSTEAD OF SODIUM, IT INCREASES FPS BUT HAS NO SHADER SUPORT AND IT MAY NEED RELATIVE NEW GPUS
In beta versions there may be some unactive mods, if you enable them your game may crash
Older versions may have some utility or decoration modifications, while newer ones only focus on performance. These changes are made from 1.21
What?
Incredibly Optimized experience with some non game chanaging stuff, zoom, bug fixes and too many FPS
Why?
Made by an optimization paranoic for optimization paranoics
How much performance?
Up to 1500 FPS at 32 render distance
Spoiler
on an rtx 3060 at 1080p with opened browser and windoed mode
It includes zoom, some hunger and shulkerbox info, texture and model compatibilizers, and borderless fullscreen.
Shaders and stuff?
It includes shader loader and resource pack compatibilizers for resource packs with models or animations
THE MOD CONTAINS A DYNAMYC LIGHT THAT MAY LAG ON BAD DEVICES, YOU CAN UNABLE IT FROM THE GAME OR DELETING THE MOD LAMBDYNAMICLIGHTS
Available Versions
How to Set Up a Fastium (Ultra Fast) Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Fastium (Ultra Fast)). Based on player count: per 8 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Fastium (Ultra Fast)" and click "Install". The fabric loader and Minecraft 1.21.4 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
Fastium (Ultra Fast) server crashes or won't start – what to do?
Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.
How much RAM does a Fastium (Ultra Fast) server really need?
Minimum 4 GB, recommended 6 GB for stable performance. per 8 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).
Can I add custom mods to Fastium (Ultra Fast) without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.4). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.
Fastium (Ultra Fast) server lagging – performance tips
1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.
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Supported Versions
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