Brightness Flickering

[gustavo_ribeiro]

I am working on scene that keep showing a brightness flickering.

I already tried everything lowering Threshold, increasing min and max subdiv, turning of GI,turning OFF glossy effects,reflection/refraction and sss. The flicker keeps showing up on my scene.

Bellow i have some frames for you to see the flicker

https://we.tl/t-h7OFc5DL9a

[Morbid Angel]

It seems you have 2 issues there. One general noise in the scene, what are your render settings? Second issue, some objects brightness is popping on/off it appears there are objects on top of each other? may need to check that.

[gustavo_ribeiro]

i did some render with a big really high min and max subdiv and it didnt work? As it is scatter is hard to control overlapping geometry.
This is a render with min subdiv of 5 max of 24 and threshold of 0.02

https://we.tl/t-NROq2UOqKw

[Morbid Angel]

Right, it may be due to max transparency clipping. See if you can raise that to something like 250-500. 0.02 is a bit high, you want flicker free renders you should go to 0.01 or lower sometimes we have to set it to 0.005. You can enable sample rate element and see where the red is - means need more samples. Also your scene is very dark, which means sampling in black will be omitted with 0.02 (so it will just get 2 subdivs there) If you hover over the image and sample its color value you should see the sample range, it will be very dark.

[gustavo_ribeiro]

The scene is dark beacause i removed GI and all the the maps to debug the scene, with gi and everything the scene is quite bright. I will try to work on the max transparency because i tested threshold as low as 0.003 and i didnt work.

[gustavo_ribeiro]

I tried to raise the max transparency to 500 and increase the thresholf to 0.002 and the problem keeps happening. I also tried to use the AA FILTER - AREA this was the only thing that reduce the flickering but it did not removed.

[gustavo_ribeiro]

I tried literally everything on the book the flickering continues.Any other idea?

[Morbid Angel]

Can you send me the scene as it is, I'll take a look.