I’m trying to final render my project of a room with fairy lights and a light source from outside the window, on the viewport render, nothing seems to be wrong but when the render is finished and denoised, these weird textures appear on the wall and bed, the only material I have on the wall is a Diffuse with color, I thought it was the lightning but I deleted the lightning, almost everything except the HDR I have for the outside lightning and it still keeps giving me this texture. Does anyone know why this may happen and how to solve it? This project is for college due tomorrow and I would love to have a high quality render.
Are you sure it’s not an issue of your textures ?
You might not see these things in viewport render because of the low quality, but only when rendering when everything is much more detailed and precise…
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Looks like denoising artifacts to me … You should try to adjust your render settings accordingly (e.g. more samples).
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I think @Ruwo pointed this right, it looks like optix denoiser for me too. The open denoiser is slower but does not have this artifacts.
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I had to check off the caustics and add exposure after rendering, I think it was a problem with the lights because I rendered it at 10,000 samples and it was still the same, but thank you!