Light Artefacts

Hello evryone ,

I have some issue with my lights in my project, somes artefact in the shadows and foliage in my viewport like you can see in the video :

I have :

Exponential Height Fog (stationary)
Light Source (stationary)
Postprocess Volume
3 rectLight (stationary)
SkySphere
Sjylight (static)
Sphere Reflection capture

Raytracing is active

Someone can help me?

Thank you