Cubemap bug?

Ok, i played today RP_Downtown in MP and SP. So, there is 3 random cubemap bugs on the ground. I think that materials causes that. This is my first time that i have it. It’s not the specs. Their ok. But i just don’t want to install all materials and models again. I add picture soon. PS: This happens in Rp_City11_Night too.

EDIT: Sorry, tried to open map. Crashed again. My GMOD is messed up. :crying: