Troubleshooting Missing PBR Reflections and Performance Drops

Because Lumen RTX relies on hardware-accelerated Ray Tracing and custom Physically Based Rendering (PBR) maps, incorrect video settings or hardware limits can cause the pack to look like plain vanilla Minecraft or run at a low framerate.

Fixing Missing Reflections and Fog

If the adjusted vanilla textures load but you do not see material roughness differences, block convexity, or the unique fog:

1. Open Settings > Video and verify that the Ray Tracing toggle is switched on.

2. If the toggle is greyed out, check that you have activated the Lumen RTX pack in Global Resources from the main menu before entering the world, as some worlds do not initialize PBR pipelines if the pack is only applied mid-session.

3. Confirm your system meets the hardware requirements: Windows 10 or 11, at least 8GB of RAM, and a Ray Tracing capable GPU (Nvidia RTX series or AMD RX 6000 series and newer).

Improving Framerate with Ray Tracing Enabled

1. Open Settings > Video while in your world.

2. Scroll down to Ray Tracing Render Distance (separate from standard Render Distance) and lower the chunk slider.

3. Enable Upscaling in the Video menu if available for your graphics card to maintain higher framerates while preserving Lumen RTX's lighting and fog.