Hello Bengamin, thanks man for your time indeed. I am not using global volume exactly cuz of bad experience with its fireflies and unabling to clean the noise. So I am just using the Skylight volume, I am also using Corona High Quality Denoising, as I see you have no fireflies in the last example. So I cannot figure out what's the issue honestly speaking.. because my scene is also very simple and there's not any special element making problems, I have no clue honestly speaking!