I think the problem might be having the contrast level too high. I usually turn dynamic lighting off as I have a pretty weak computer for TS and it helps my performance, this also allows me to turn scenery density and quality to 10.
About 3 weeks ago I put all the settings to the max just to see how it looks and how my computer would handle.
When I loaded into the B&LE route, the world was very shiny. I fiddled with the settings in the pause menu and turned down the contrast, ambient lighting, and sunlight intensity a bit. Everything was better lit afterwards.
Here's a screenshot of what I was able to get with max settings.
I did get an odd black border on some of the scenery and my locomotive when zooming in.

You do not have the required permissions to view the files attached to this post.
"Let them be your reminder that we've combined the best of two railroads. But from now on, call us Penn Central."