.sbsar or textures, performance

Development Rendering
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1

hello

I was making my textures for materials in Substance Designer and a question arose:

which is heavier for rendering in Unreal:
.sbsar or textures rendered in Substance Designer outputs?

This question is for the viewport and the Render Queue window.

thanks

2

Doubt it makes any difference at all, the sbsar in all likelyhood just bakes its result out to a texture anyway.