Glitch and distortion after packaging

Hi,

I’m having a problem with packaging.

In UE4 editor the game looks perfectly fine

Imgur: The magic of the Internet

but when I export it, it becomes a huge mess.

Imgur: The magic of the Internet

I think it’s only affecting the tiles because cars and pickups stay unaffected.

Tiles are BP actors, buildings and the road are all in one mesh

(one of the tiles) Imgur: The magic of the Internet


Thanks in advance