The Clients & The Servers [TCATS]

Name: The Clients & The Servers [TCATS]
Price: 12 EUR
Author: olivef22z

All of the mods in my two modpacks "The Clients" and "The Servers". Supports 1.21.8 (1.21.9 and 1.21.10 coming soon!) (I also added some extra mods that weren't in either one)

by olivef22z

181 Downloads

0 Followers

fabricMC 1.21.8adventuremultiplayeroptimization

Rent The Clients & The Servers [TCATS] Server

Screenshots

About this Modpack

Heres what The Clients & The Servers does!

The Clients and Servers is a modpack that has the best client and server side mods, with features like more FPS, optimization, more configurable options, more biomes, more structures, a minimap, a better F3 menu, better looking clouds, shader suport, dynamic lighting, 3D skin layers, letting you see light levels, zooming, better building, more blocks, more enchants, and much more!

My Links

The Clients Modpack

The Servers Modpack

More Projects Made by me

My Organization

Discord Server / Report Issues

Available Versions

1.21.8 - alpha1.0.0alpha

MC 1.21.8fabric181 downloads

October 11, 2025

How to Set Up a The Clients & The Servers [TCATS] Server

Order Server

Choose at least 6 GB RAM (8 GB recommended for The Clients & The Servers [TCATS]). Based on player count: per 5 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "The Clients & The Servers [TCATS]" and click "Install". The fabric loader and Minecraft 1.21.8 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

The Clients & The Servers [TCATS] 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 The Clients & The Servers [TCATS] 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 The Clients & The Servers [TCATS] without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.8). 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.

The Clients & The Servers [TCATS] 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.