Textures/Assets is wrong.

This Photo says a lot. This affects all textures, blocks, and even slots for armor and shields. Skins and inventory slots are not affected. 

I fell also it should be mentioned that in 1.7-1.13 It crashes after a while. 1.14 for me is the first to work besides the earlier versions.

 

I believe that this is a Graphics issue regarding my PC, but I've played MC before on this computer just fine. I'm just utterly confused. Help?