Smudge Brush Question(s) for artists

[C2CL]

Thank you for taking the time to create a thread dedicated to the smudge engine.
We had a discussion in another thread about banding that sometimes occurs in certain brushes, mainly brush with thin dabs and textures enabled.

Banding with colour smudge brushes

Hi! I thought it was about time I asked about this as it’s been bothering me for years! The behaviour of the colour smudge engine seems somewhat unpredictable or inconsistent. The main issue is the banding I get through a brush stroke. It seems to affect flatter brush tips more than round ones, and seems to get more pronounced as I reduce the brush size; This in turn seems to affect the opacity. I’ve tried to isolate the cause, but not been able to narrow it down - it’s…

I was wondering why the banding can occur in Krita and not in Photoshop or Clip Studio Paint. I tried doing some comparison test between the softwares but it’s still hard to figure out the reason for the banding, maybe it’s because I’m not familiar with the formulas,haha. Does it have something to do with the way each of the software handles sampling? Do you have insight regarding this behaviour?
I can provide some screenshots to show the comparison if you want.