Light layers causing trails / artifacts on random things in scene in both edit/play mode

I turned on light layers and was settings things up when I noticed that as I moved the camera around it was leaving trails and artifacts all over random geometry. Especially where I have a large area light that was limited to a specific light layer, it is causing many different things to leave the trails and artifacts. If I turn that particular light off, most of it goes away, but some other lights do still cause it in different areas.

You can see an example in this clip here. https://i.imgur.com/Ra4cVFg.mp4

 

Looks like it might be the snow shader I was using on the geometry, as I switched the material to Substance mats and the issue went away.

 

Hi,
Was this snow shader authored using shader graph ?

 

It looks like it was made with Amplify. (from this asset : https://assetstore.unity.com/packages/3d/environments/winter-environment-nature-pack-142750).

I found another shader that does the same thing. It was one I made using Amplify as well.

I will jump on their forums / discord and let them know what is happening as well.

The video above was 2019.2.17 hdrp v6.9.1, but it also occurred in 2019.3.0f3 hdrp v7.1.6