How to remove the white splotches for my render?

Extending SketchUp V-Ray for SketchUp
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TV cabinet.effectsResult
TV cabinet.effectsResult1920Ɨ1080 76 KB

Here is my render picture , i am still a student , learning about vray. Can anyone teach me how to remove the white dots / splotches? Thanks

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Did you make any changes to the rendering settings? More precisely at GI?
Reset to default and render again.

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Check for reversed faces. As @mihai.s says, start with Default settings. Turn on Denoiser. Is your white material unrealistically light (255,255,255)? Is the beam a closed shape?

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Use brute force instead of irradiance map?
This could possibly also fix the light leaks at the ceiling.

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I solved the problem, at first Iā€™m using GPU and I change back to CPU, set my primary rays to irradiance map then its fine. Thanks for the effort :pray:

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Using brute force cause me the problem so I change to irradiance map

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