Isaac's Optimized Horizons

Name: Isaac's Optimized Horizons
Price: 8 EUR
Author: izacharyyy

This modpack is the most optimised way to run Distant Horizons with Iris shaders.

by izacharyyy

1.8K Downloads

0 Followers

fabricMC 1.21.1optimization

Rent Isaac's Optimized Horizons Server

Screenshots

Distant Horizons with BSL Classic shader

Distant Horizons with BSL Original shader

Distant Horizons with Noble shader (hardest to run at default)

Distant Horizons with Complementary Unbound shader

Distant Horizons with Complementary Reimagined shader

About this Modpack

This modpack is the most optimised way to run Distant Horizons with Iris shaders. This pack contains 62 performance and/or QOL mods and 6 DH-compatible shaders. I made this pack as I was tired of poor performance and inconsistencies when running Distant Horizons myself, so I compiled a pack of well-known and very useful mods and decided to share them to the world. I wanted the best possible performance while maintaining the stunning visuals that these mods can provide, and this pack is how I achieved it.

This pack is based off of Fabulously Optimized by robotkoer, however it also contains optimisation and QOL mods not found in this pack, and of course Distant Horizons and its requirements.

WILL ADD OTHER SHADERS ONCE UPDATED TO 1.21.1 ON MODRINTH (Photon etc)

~Isaac

Available Versions

Isaac's Optimized Horizons 1.0.3release

MC 1.21.1fabric1.7K downloads

October 7, 2024

Isaac's Optimized Horizons 1.0.2release

MC 1.21.1fabric50 downloads

October 6, 2024

Isaac's Optimized Horizons 1.0.1release

MC 1.21.1fabric85 downloads

October 6, 2024

How to Set Up a Isaac's Optimized Horizons Server

Order Server

Choose at least 4 GB RAM (6 GB recommended for Isaac's Optimized Horizons). Based on player count: per 8 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Isaac's Optimized Horizons" 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

Isaac's Optimized Horizons 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 Isaac's Optimized Horizons 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 Isaac's Optimized Horizons 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.

Isaac's Optimized Horizons 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.