Chaos (the makers of V-Ray) now includes "Cosmos" assets. While not strictly a VROPT download, these assets come with pre-loaded materials and scene settings that act like VROPT logic.
: Offers a dedicated SketchUp section with free, V-Ray-ready interior scenes for bedrooms, living rooms, and kitchens. Vropt File Interior Download Sketchup
Many professional designers and community platforms share their personal settings to help others achieve high-quality results faster. Here are some of the best sources: masterbedroom & Visopt - by anand raval - Free 3D Model Chaos (the makers of V-Ray) now includes "Cosmos" assets
⚠️ Non-native formats may bring in heavy geometry. Use CleanUp³ extension or Purge Unused to remove hidden junk. Interiors with corners suffer from "darkening
Interiors with corners suffer from "darkening." In the Light Cache settings, set to 2.0 to fix corners without losing the preset's speed.
If you only see a blue box and not the actual shape, right-click the object and go to V-Ray > Proxy Preview > Full Preview . This loads a low-poly version to help you align the object with your walls and floor.