Flickering/Bright sparkeling with Planar Reflection Probe and Trees (HDRP)

Questions & Answers
1

I have this weird flickering in my project: Unity Problem: Bright Flickering with Trees and Planar Reflection Probe - YouTube

When I turn off the Planar Reflection Probe it disappears, but I need the Reflection Probe for reflection on the water. The flickering appears only in Standalone Build and not in the Editor, which is making debugging a living hell.
The Planar Reflection Probe spans the entire terrain. Strangely the bright flickering effect is only on the left side of the screen and never on the right.

What I Tried:

  • Disable Terrain → no difference
  • Change Material on Tress to HDRP/Lit Opaque and without any texture → no difference
  • Disable Bloom → the flickering is not that bright anymore but is still visible
  • Disable all Post Processing → same as disabling bloom
  • Disable Shadows → no difference
  • Cannot reproduce the problem in new/fresh Project :frowning:

Informations:

Does anyone have an idea? I am kind of desperate and look forward to every hint.

2

I changed the shader of the tree billboards and that solved the problem. But I do not know why the other shader does not work …