
Cobalt Client
Cobalt Client is a performance based and general quality of life modpack that works on any server.
Screenshots

About this Modpack
Ultra Performance & Quality of Life Modpack.
Includes:
{Performance Mods}
BadOptimizations
Concurrent Chunk Management Engine (C2ME)
Cull Leaves
Dynamic FPS
Enhanced Block Entities
Entity Culling
FerriteCore
ImmediatelyFast
Indium
Lithium
Methane
ModernFix
Sodium
Sodium Extra
Very Many Players
Iris Shaders
Noisium
{Quality of Life Mods}
AppleSkin
ArmourHUD
Better Beds
BetterF3 (Please Config this with F3+M in game to edit it)
Capes (Allows to see Optifine Capes)
Debugify
FabricSkyboxes
Full Brightness Toggle
Jade
Journeymap
Just Enough Items
Mod Menu
No Fog
No darkness effect
YetAnotherConfigLib
Zoomify
{Shaders}
- BSL Shaders
- Complementary Shaders
- Continuity
- Insanity Shader
- Rethinking Voxels
{APIs}
- Architectury API
- Cloth Config API
- Collective
- Fabric API
- Fabric Language Kotlin
- [EMF] Entity Model Features (Allows for animated texture packs)
- [ETF] Entity Texture Features (Allows for animated texture packs)
Alt Version Mods
Includes:
{Performance Mods}
- BadOptimizations
- Concurrent Chunk Management Engine (C2ME)
- Cull Leaves
- Dynamic FPS
- Enhanced Block Entities
- Entity Culling
- FerriteCore
- ImmediatelyFast
- Indium
- Lithium
- Methane
- ModernFix
- Sodium
- Sodium Extra
- Very Many Players
- Iris Shaders
- Noisium
{Quality of Life Mods}
- AppleSkin
- Better Beds
- Capes (Allows to see Optifine Capes)
- Debugify
- FabricSkyboxes
- Full Brightness Toggle
- Mod Menu
- YetAnotherConfigLib
- Zoomify
{Shaders}
- BSL Shaders
- Complementary Shaders
- Continuity
- Insanity Shader
- Rethinking Voxels
{APIs and Libraries}
- Architectury API
- Cloth Config API
- Collective
- Fabric API
- Fabric Language Kotlin
- [EMF] Entity Model Features (Allows for animated texture packs)
- [ETF] Entity Texture Features (Allows for animated texture packs)
Available Versions
How to Set Up a Cobalt Client Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Cobalt Client). Based on player count: per 8 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Cobalt Client" and click "Install". The fabric loader and Minecraft 1.21.1 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
Cobalt Client 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 Cobalt Client 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 Cobalt Client without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.1). 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.
Cobalt Client 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.
Similar Modpacks
Rent Cobalt Client Server
Start your own server with automatic modpack installation.
Supported Versions
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From €8.00/month with 6 GB RAM for the best performance.
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