Why doesn't my Optimum Realism look like the YouTube videos and screenshots
The screenshots and videos use a shader — that's where the depth, reflections and lighting come from. Without a LabPBR shader you see the textures on flat vanilla lighting. Install Iris + a cinematic shader and it matches.
You don't have a shader
Optimum Realism's textures carry LabPBR material data — height, reflectivity, emission. A shader reads that data to produce the depth and reflections in the videos. Vanilla Minecraft ignores it, so the pack looks flat. Install a LabPBR shader and it transforms.
Wrong or lighter shader than the videos
The cinematic look comes from Kappa, Sundial or SEUS PTGI. Lighter shaders (Sildur's, Chocapic Toaster) either don't read LabPBR or skip the heavy lighting, so reflections and depth go missing. Match the shader the showcase uses.
Shader settings turned down
If you lowered shadow quality, POM/parallax, reflections or render distance for FPS, the scene loses the marketing punch. POM and reflections make the biggest visual difference — keep those on.
It's a Bedrock RTX shot
Some showcase clips are the Bedrock RTX edition, which path-traces light differently from Java shaders. If you're on Java, you're comparing against an RTX clip — aim for the Java + cinematic-shader look instead.
Render distance + time of day
A lot of screenshots are golden-hour with high render distance. The same world looks very different at noon with 8 chunks. Bump render distance and catch sunrise/sunset to match the mood.
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