Why is there noticeable noise in the output still frames?

The following reasons can result in this effect:

  1. The driver version is too low. It is recommended to update the driver to a later version: How to view and upgrade graphics card driver?

  2. Noise is relatively obvious in certain materials. You can check the parameters of the abnormal material, if the normal/roughness/specular parameter is very high, or if there is a light source near the current material or the ambient light is relatively strong, noise may appear; it is recommended to reduce the normal/roughness/specular parameter a little.

  3. Noise caused by insufficient light in the scene. This is more likely to occur in indoor scenes, especially in models with small windows/rooms with large depths. Using the default sky parameters may result in noise due to insufficient light to illuminate the scene; it is recommended to switch off the dynamic option or reduce the exposure and add other light sources to bring light into the scene.

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