Is the DecalLifetimeOpacity material node working for you?

I have a Decal spawning via Niagara, I’m using a Decal Renderer and in the shader I have plugged via a Multiply the Decal Lifetime Opacity node and into the Opacity. I’m not sure if I’m doing something wrong but the decal won’t fade in or out using the settings in the Decal Component Renderer. I tried using a particle color Alpha channel in the material too but it wasn’t working either. Any help please?

EDIT: I sort of got the Decal to Fade in/out working using a Float parameter in Decal Screen Size and a curve in Particle Update, but it’s not smooth at all. And the Fade Start Delay/Duration etc etc aren’t working

Have you tried setting a DecalFade parameter?

I found this video helpful…