What's the difference between using multiple material attributes and one? (Master Material)

Development Asset Creation
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1

I wanna make a Automatic Landscape master material.

I have seen multiple tutorials for creating a master material, both for landscapes and not, they are all doing it different, but what they have in common is that they either use the Main Material Node and connect every different texture (with lerps and switches) to it, or they use the Use Material Attributes and the Make material attribute node for every different “pair” of textures (one for grass, one for rock etc.). But so far, I haven’t seen a single one that explains the differences.

Is there a performance difference?
Which one would be cheaper to use?
What’s the difference?

It looks cleaner with multiple material attributes, but initially I feel like that would be more expensive, is that correct?

(I’m using UE 5.3)

2

Different ways of making the materials using Blueprints are just for personal preferences. Performance depends on the resolutions and settings for the textures of the materials.