This setup is fast for interiors but struggles with displacement and detailed shadows.

Beginners see "Subdivs" in Lights, Materials, and GI and set them all to 64. Leave Materials Subdivs at 8 and Lights at 16 . The Image Sampler (Max Subdivs 24) overrides them. High Subdivs elsewhere kill speed for no visual gain.

: Enable the V-Ray Denoiser . It's the best way to remove "salt and pepper" noise without waiting hours for the render to finish.

function refreshCustomList() sketchup.get_custom_presets(function(list) var sel = document.getElementById('customList'); sel.innerHTML = ''; list.forEach(function(p) var opt = document.createElement('option'); opt.value = p; opt.text = p; sel.appendChild(opt); ); );

This is where 80% of your render time lives. V-Ray uses a two-bounce system: Primary Engine (Direct light) and Secondary Engine (Bounced light).

module VRaySettingsManager extend self

The default SketchUp shadow engine is terrible. Always delete the default Sun and use via the Lights toolbar. Then, go to the Environment tab. Set GI (Background) to Sky (using the sun). This gives you realistic atmospheric scattering.

Use these settings for your next three renders. Then, only change the (lower for final, higher for tests). Ignore the rest until you master lighting.

refreshCustomList(); </script> </body> </html>

Always use Physically Based Rendering materials (Normal, Bump, Reflection maps) for realistic surface reactions. Enable Safe Frame:

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