Selecting a Hardware Profile
Candela Shaders includes balanced performance profiles built for low and medium hardware configurations, allowing older and potato computer setups to run shaders without overloading the graphics card. To switch profiles in game, pause Minecraft and navigate to Options, then Video Settings, and open your Shaders menu in Iris or OptiFine. Select Candela Shaders from your pack list and open the shader pack settings screen. Locate the profile option in the menu, switch between the low and medium configurations based on your frame rate needs, and apply your changes so the world reloads.
Pairing with Vanilla Video Settings
Even with lightweight bloom, moving foliage, and tinted shadows, vanilla render settings still affect overall performance. If frame rates dip in dense forests where waving leaves and volumetric light shafts overlap, return to Video Settings and lower your Render Distance and Simulation Distance by a few chunks. Keeping Biome Blend modest and switching Graphics from Fabulous to Fancy also prevents unnecessary graphics card strain, as shader loaders run best without vanilla's Fabulous transparency pipeline. Test your changes during sunrise or sunset in a wooded biome to confirm your chosen profile maintains smooth frame rates under heavy shadow rendering.