Rubidium Mod 1.20.1 Guide

Rubidium is a Forge-focused rendering optimization mod. The safest setup approach is to match every component to the same Minecraft version and make changes in a controlled order.

Key steps

Rubidium 0.7.1a is listed as a main 1.20.1 release on CurseForge.
Use a compatible Forge or listed NeoForge build.
Keep other rendering mods minimal during first launch.
Back up the instance before changing performance mods.

Compatibility checks

Before launching, verify Minecraft, Forge or NeoForge where applicable, Rubidium and any shader or rendering add-ons. The Rubidium project explicitly states that OptiFine is not compatible.

Practical test method

Launch a clean profile first. If it works, add resource packs, shaders and other mods in small groups. This makes it much easier to identify the component that introduces a crash or visual problem.

Minecraft 1.20.1