I did my occasional (about every 3 or 4 weeks) run on the Bakerloo earlier and I could swear the illumination from the headlights on the 1972 stock (official reskin version) were showing up more of the tunnel walls ahead. Or maybe I haven't run it since tweaking my monitor settings, but it does look better whatever happened.
I really don't know i haven't play that route, after the update. Do you think you could post a photo here to show us?
I have noticed the same thing. Though I barely drive Bakerloo Line, but I just did a run the other day and the headlights seemed brigher than in the past.
Well I finished my run and now doing a long scenario on Cane Creek, but I'll see if I can capture it next time I go on the route.