Lowering your texture settings can help if the UI becomes sluggish due to the high-poly models included in this version.

If the game crashes immediately ("Minidump"), ensure you don't have other conflicting mods enabled. Imperium is designed to run standalone.

Locate your mod folder, usually found at: C:\Users\[YourName]\Documents\My Games\Ironclad Games\Sins of a Solar Empire Rebellion\Mods-Rebellion v1.85 (the version number may vary based on your game update).