Noise level limit sometimes doesn't work correctly

[Sacifair]

Hey, Corona team!

I noticed an issue with noise level limit.

Not in all scenes, but there is after all. It can be in interiors and exterior scenes.. doesn't matter.
Usual I render images by noise level limit (coz rendering by passes limit is hard for me to understand how much it needs for each situation(an image) and by time limit is the same problem for me) noise level is preferable, so ..

Sometimes, my images have horrible noise in some of parts of an image. At 2.00% and even less!! It still looks really noised. Even when an image has +3000pixels
I cannot decrease noise level limit less then 1.5-1% it's abnormally :(  my Core I9 7980X will render it for hours!

- Question, how can I fix this? Maybe I do something wrong?
I share with you by my latest scene with this issue, hope you'll help me guys!

Thanks!

[GeorgeK]

Hey, Corona team!

I noticed an issue with noise level limit.

Not in all scenes, but there is after all. It can be in interiors and exterior scenes.. doesn't matter.
Usual I render images by noise level limit (coz rendering by passes limit is hard for me to understand how much it needs for each situation(an image) and by time limit is the same problem for me) noise level is preferable, so ..

Sometimes, my images have horrible noise in some of parts of an image. At 2.00% and even less!! It still looks really noised. Even when an image has +3000pixels
I cannot decrease noise level limit less then 1.5-1% it's abnormally :(  my Core I9 7980X will render it for hours!

- Question, how can I fix this? Maybe I do something wrong?
I share with you by my latest scene with this issue, hope you'll help me guys!

Thanks!

Are you using CoronaAO for the white wall material? If so, can you raise the sampling and retry?

[Sacifair]

Nope
I don't use it directly in materials. Only in render elements for post-processing on Photoshop

[GeorgeK]

Nope
I don't use it directly in materials. Only in render elements for post-processing on Photoshop

Can you provide the scene to test this internally? I tried recreating it but was getting the same results even with AO differences.

Thanks!