Blender remove fireflies (Substance painter node) I have a problem here on my last project with noise. For some reason I have some white dots on this render, do you have any idea how can I fix it?

On my scene, I have bean used portal lights for each window, and HDRi image for the lights and this render is done with 20.000 samples, and still I have noise.

I've been searching a way to remove this so I've tried some advice from 7 Ways to Get Rid of Fireflies Once and For All and nothing works for me.

Afters this I found out that the responsible for these fireflies is my Substance Painter node, removing that node and putting just a simple node like Diffuse on his place and everything will be fine.



Do you have any idea what should I do to solve this problem? 
Thanks
Really good question Duarte! This is a common problem that I have faced many times. There is a despekle node built into the Blender compositor, as well as other third party softwares that can help you with this. Try rendering with a higher sample count. 20 is very low. GIMP is a free image editing software that you can use to remove fireflies, as I have many times! Video tutorial on removing fireflies in blender - Remove noise in GIMP I have included an image below on how to get rid of fireflies in GIMP. Hope this helps you some!