Tsw5 Cathcart Train Textures

Heya all.

I downloaded the free starter version of train Sim World 5 and then downloaded the compatable Cathcart and 380 add on and the textures are absolutely horrible.

I have an Xbox One X and had fairly clean and decent textures when playing Cathcart (I only play Cathcart, ECML and SEHS extended) on TSW3&4.

Is this genuinely just too much for the One X or am I missing something.