Only the Influenzo engines have so big texture. If you compare with vR BR 101 wich is also a simple red engine, the texture are mutch more smaller. And no one have ever complain about the visual quality of the BR 101. I don't know why Influenzo use so large textures.
A lot of stuff have *Doppeltexturen* (hidden in .ap file). And according to me, a lot of stuff is nice enough with the lower quality texture. Most time we drive... from the inside. And when we take pictures, we never do close up of a part of the train. The be honest, even good old TTB TRAXX are nice enough when your see them from the cab or even for a picture at more than 10 meters.