How to improve performance on imported materials?

Question

I create materials inside Substance Designer.
--> Publish them for Substance Painter

Once I am trying to tweak material parameters inside of Substance Painter, I notice that my PC takes forever to output the result in the viewport.

I am using a very powerful CPU and GPU.

Are there any settings inside Substance Painter to improve the performance?
Is OpenGL faster vs. DirectX or does this not matter at all?
Or what else am I missing here?

Thanks for any info that helps improving the performance, appreciate it!

Léna Piquet Froyok · Accepted Answer

You can follow the Designer performance guidelines to improve your graph(s): https://substance3d.adobe.com/documentation/sddoc/performance-optimization-guidelines-102400075.html

Cedric Marchessoux · Answer

Did you have a look to the documentation page  https://substance3d.adobe.com/documentation/spdoc/performances-guidelines-168198992.html ?

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