Volumetric light flicker in fog

Unity Engine
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1

Hi!

When I use volumetric spotlight with fog I see strong flickering of volumetric light cone.

I already enable in Volumetric fog filter because without it is super noise also.

HDRP 9.0.0-preview.33.

Here is a video: https://drive.google.com/file/d/1lpMEfO0cD653fZ9ptCjctLOfz0LGBJeQ/view?usp=sharing

2

Is the reprojection enabled? Looks ok for me because the technique for volumetric fog in Unity is rather limited.

3

Uploaded it as video so you can better see what I meant.
https://drive.google.com/file/d/1lpMEfO0cD653fZ9ptCjctLOfz0LGBJeQ/view?usp=sharing

I tried to enable/disable reprojection but results is about the same.

P.S. I also tried to disable bloom it became less bright but still very noticable.

4

So here is something that I did not see at first.

6113429--665696--upload_2020-7-21_17-49-11.png
6113429--665696--upload_2020-7-21_17-49-11.png753×128 14.2 KB

I changed Anisotropy to zero and it fixed that flickering.