My 8k export is not matching visually (except for resolution of course) the 4k export - I am masking between two materials in folders with an image alpha - and the export matches if I just export either material by themselves - but any masking element -procedural or image makes it so they are not identical as if the greys are weaker in 8k -I have an nvidia quadro M6000 24gb card - windows 10 - and running Adobe Substance 3D Painter Version 7.2.3 build 1197 -thx
... after exporting textues - just to clarify
...also, I read you have to set 'cooking' to 8k in the preferences - but it does not look like that is an option in this version of Substance Painter
You should be able to bake your mesh in 8K in Painter.
My issue is when exporting 8k textures (diff -roughness etc.) vs. 4k (or lower) textures not matching visually - for example -all of my diffuse texture exports look the same exported in 4k - 2k -1k - - but when I export in 8k - it does not - and it looks like the greys in the masks of my folders get changed slightly- (I am mixing between two folders with materials in them- with a mask on the top folder) - where the bottom folder material shows more in the diffuse than it should exported in 8k. - It does not matter if I use a procedural for the mask or an image map -it still looks different exported in 8k.
(I am able to bake my mesh in 8k - Maybe the baking(cooking) here just relates to the 'Mesh Maps' -which work fine (I was just speculating that the cooking/baking function also related to exporting textures)---
I will send you a pm message to get your project and log.