Strange Textures

[anonymous_user_41b74186]

Hello guys!
As you see at the pictures i have that kind of problem…I dont have any light issues but i have that strange moving textures in my walls…How can i fix this?
Also I want to know how can i select areas of landscepe in order to make roads,parks etc

[anonymous_user_2ed5b4c7]

Hi!

I think that your objects overlapped each other.

With overlapping

Without overlapping

[anonymous_user_41b74186]

I must say that i dont know how to avoid overlapping cause most of the times the objects dont have the exact meters and shapes…