Light Grain/ Edge Glow?

Hi all,

as seen below around the edges of my meshes there is a grainy light glow. In older projects this didn’t happen yet.
I searched everywhere but cannot seem to find the right answer.
I am currently on UE 5.3 with Lumen and hardware raytracing enabled. All the common post process effects such as final gather etc. are enabled. Raytracing shadows is also enabled.
I also downgraded the Nvidia Driver, since I had problems with the newest one concerning light flickering.

Thanks for your help!