I'm dealing with a lot of fireflies in my scene in 3DMax. I did change the AA value nothing worked. High Render Quality denoising only leads to fireflies, nor Nvidia or Intel.
I use Corona Sky as Env but even with HDRI, the fireflies get more!!! I have nightmares at night about Fireflies now :)) LightMix value are not higher than 1, and when sky is only visible, it only generates the fireflies..