light reflection

[moneech]

hi

i dont know why lights reflections on walls is not as good as it shood be and it is not the same as it is when i render with vray for revit
thank you at advance

[vladimir.nedev]

These are artifacts which happen when the AI denoiser has to denoise a very noisy raw image.

If you have lots of lights in your scene, you can try increasing the number of light tree samples (in future builds we will have a better solution for many lights).
If you don't have many lights, maybe your AA samples are too low.

Greetings,
Vladimir Nedev

[npg]

To add to that, in general, you could use the denoiser toggle button in the top right toolbar to disable it for a moment and see if there is excessive noise (and where). In this case it looks like there are light strips around these window frames that cause a lot of noisy bright pixels in the area. Are those mesh lights in the original scene? We don't fully support mesh lights yet, so they get replaced with an emissive material and its light is sampled inefficiently as GI. Maybe reducing the maximum secondary ray intensity in Render/Advanced would dampen these fireflies, though it would also darken the frame as a whole.

One more thing, it seems you're rendering with opacity maps turned off. This is disabled by default for better performance, but tree leaves and such are wrong. The button for this is a leaf at the top left.