Substance Painter textures rendered in Arnold don't look as expected

[artfultigrus]

Hi guys,

I'm struggling two days already to make my textures from Substance to look similar when rendered

in Arnold (I understand it'll not be 100% match). The problem is bump, which looks nothing like in Substance. I tried to use Normal as a bump and then Height as a bump (aiStandartSurface shader). In general Normal gives harsh and different pattern result in scratches and dots keeping rust bump and pattern more less ok, Height does vise versa - too light in scratches and dots, no bump at all in rust. Here are the details:
What I tried already and it didn't help:
1. To use Normal map as a bump ( use as Tangent Space Normals on, Flip R, Flip G off) (screenshot), then:

- Changed color space of Normal to Raw and back to sRGB, turned alpha is luminance on/off
- Changed bump2d node to aiNormalMap

- Changed color space of BaseColor to Raw as someone suggested in related topic
2. To use Height as a bump (plugged directly into shader's bump without any changes) (screenshot), then:
- Changed color space of Normal to Raw and back to sRGB, turned alpha is luminance on/off
3. Updated Maya (to 2018.6) and Arnold (to 3.3.0)
4. Exported higher resolution textures from Substance - 8k 16 bit instead of 4k 8 bit

Nodes are connected to the shader as direct plug in, settings:
BaseColor - sRGB
Roughness - Raw, alpha is luminance
Metalness - Raw, alpha is luminance
Normal/Height - as described above

Hope you can help, guys, I'm so frustrated...

[Freaky_Styley]

Hi! Did you find a way to resolve this problem? I'm interested too..