Cassetu's Building Pack

Name: Cassetu's Building Pack
Price: 12 EUR
Author: CassetuYT

Mods + Shaders that Cassetu uses in his builds

by CassetuYT

157 Downloads

0 Followers

fabricMC 1.21.11optimizationtechnology

Rent Cassetu's Building Pack Server

Screenshots

About this Modpack

Axiom, Shaders and everything you'll need to start building GIANT megastructures!!

This Modpack is often used by Cassetu, and has the Bobby mod, so your builds will load no matter how large/long they are.

This doesn't contain that much optimization so you'll have to set it up yourself if you want better fps.

(Hours used by Cassetu: 500)

Current Modpack Versions (And different Recording Software):

1.21.11 (Flashback)
1.21.1 (Flashback)
1.21.1 (Replay)

Available Versions

Cassetu's Building Pack 1.21.6release

MC 1.21.6fabric26 downloads

April 2, 2026

Cassetu's Building Pack 1.21.11release

MC 1.21.11fabric15 downloads

April 2, 2026

Cassetu's Building Pack 1.21.1release

MC 1.21.1fabric9 downloads

April 2, 2026

How to Set Up a Cassetu's Building Pack Server

Order Server

Choose at least 6 GB RAM (8 GB recommended for Cassetu's Building Pack). Based on player count: per 5 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Cassetu's Building Pack" and click "Install". The fabric loader and Minecraft 1.21.11 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

Cassetu's Building Pack 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 8 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 Cassetu's Building Pack server really need?

Minimum 6 GB, recommended 8 GB for stable performance. per 5 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 €12/month).

Can I add custom mods to Cassetu's Building Pack without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.11). 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.

Cassetu's Building Pack server lagging – performance tips

1) Increase RAM to 8 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.