Hot to get rid of this flickering effect in my render.

Hi everyone,

I’m having an issue with flickering / shimmering in a cinematic render and I’m trying to understand what is causing it and how to fix it.

I’m rendering a static architectural scene in Unreal Engine using Lumen lighting. The problem appears when I do a slow camera move-in: some parts like the red panel and the valcony start to flicker or shimmer during the movement.

I attach some information about the render.

Thank you.