
All The Client Optimisations
A lot of client Optimisation and QoL mods For friends with potato PC's as well as RTX Cards
About this Modpack

This modpack aims to create an enjoyable Minecraft experience for all different kinds of hardware,
while supporting virtually every visual optimisation I could find.
With a few quality of life tweaks such as:
Here 'n' There and Simple Voice chat for easier communication. ATCO also comes with a custom version
of Vanilla Tweaks, as well as custom loading screen and menus.
Performance vs Quality
As of version 1.0 everything is set to performance mode. You can change this of course by going into the settings.
One thing that I disabled that you might not find easily is Particle rain, which if you want to use it has to be enabled via mod options.
One last thing: if you can afford it in the current RAM economy (written December 2025) I would advise giving ATCO 6Gb.
Have Fun
Available Versions
How to Set Up a All The Client Optimisations Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for All The Client Optimisations). Based on player count: per 8 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "All The Client Optimisations" 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
All The Client Optimisations 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 All The Client Optimisations 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 All The Client Optimisations 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.
All The Client Optimisations 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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From €8.00/month with 6 GB RAM for the best performance.
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