I'm using Cycles as my render engine, on the latest version of Blender 3.5.1
In compositor, I used a set of nodes to seperate the highlights (glossy) from the rest in order to save it seperately in a .png file.
Set alpha Node for transparency, Mix/Math node with add method to get both direct and indirect glossiness, Denoise to get a clean looking result.
Issue : after rendering, I display the result (Viewer node) and it looks perfect, no noise, no issues, and it has transparency
But when I save it as .png, the image is noisy
What am I doing wrong ?