hello!
recently I started working on models for google earth..while working on some of them this problem occured when I select the layer:

the problem is that I don’t know what’s causing this
it seems like z-fighting on the first look but there is no flashing while moving around the model and when I try to delete it (like I do for z-fighting) than it becomes even worse:

after deleting the other parts and putting new ones the story remains the same 🙁
here’s how it looks when a texture is imported over

thanx for any help 😉