Fastyy

Name: Fastyy
Price: 8 EUR
Author: avivo10

A lightweight performance based modpack (with actual human needs met) DEPRECATED

by avivo10

47 Downloads

0 Followers

fabricMC 1.21.10lightweightoptimization

Rent Fastyy Server

Screenshots

About this Modpack

Fastyy DEPRECATED

A lightweight performance based modpack

DEPRECATED

as ive stopped playing vannila mc and will probably also move to hytale i have found no reason to stop maintaning it, ty for using this i hope youll find a good replacment (performium is what i reccomend but there a lot more)
again ty for being on this journey with me

For a long time I have personally wanted an actual lightweight modpack that is focused on performance.
So instead of relying on other modpack makers, I made my own.

It comes with great performance mods that are built to give you a great experience while also giving you a basic QOL (quality of life) mods, if you want to disable them I'll say what mods and how to disable them at the end.

Most important mods are:

Sodium, gives a big performance boost and does many things
Lithium, optimized the game's math
BadOptimizations, does a lot of micro optimizations, that adds up to a lot of performance

And a lot more which I can't say because it will be too long.

I have not made any of these mods but I do love them and appreciate the mod makers.

QOL mods included:

Gamma Utils (Fullbright)
Zoomify (Zoom)
ViaFabricPlus (Join older servers)
Cubes Without Borders (borderless fullscreen, a must have)

To disable them: either disable through your launcher or add .disabled to the mod’s filename.

*Sadly there are no configs included (because im not smart enough to make them) but it only takes a few minutes to get up and running.

Legal

This modpack includes mods released under the following licenses:

All rights belong to the respective authors. This modpack is distributed for non-commercial use.

Available Versions

Fastyy 1.0.1release

MC 1.21.10fabric30 downloads

October 18, 2025

Fastyy 1.0.0release

MC 1.21.10fabric13 downloads

October 16, 2025

How to Set Up a Fastyy Server

Order Server

Choose at least 4 GB RAM (6 GB recommended for Fastyy). Based on player count: per 8 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Fastyy" and click "Install". The fabric loader and Minecraft 1.21.10 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

Fastyy 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 Fastyy 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 Fastyy without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.10). 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.

Fastyy 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.