: GPU rendering is significantly faster for modern hardware, while CPU rendering is highly accurate and used for final production on machines with lower-end graphics. Interactive vs. Production :

Use Irradiance Map for faster interior previews. 4. Noise and Quality Control Getting a clean, "grain-free" image without waiting hours. Noise Threshold: Final Renders: Set to 0.01 or lower for crisp results. Drafts: Set to 0.05 to save time.

Lighting is the soul of any render. Even perfect settings won't save a poorly lit scene.

For a "solid" piece where grain is very noticeable on smooth faces, lower this value to Enable the V-Ray Denoiser