How can I scale material instance to repeat itself on a bigger mesh?

Development Rendering
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1

When I scale my static mesh the material instance gets stretched out and becomes really blurry, anyway I can make it repeat? or become more high res.

2

thats kinda complicated in unreal, you should try building bigger meshes by stacking multiple same meshes

3

I would like to know the complicated, this is for a custom mesh being used as a landscape.