Unfortunately this has been present since these wagons were released with the Vectron. It was mentioned at the time but never fixed. I suppose it could be fixed, because the same issue occurred with the wagons in SEHS when it was re-released, and that was eventually fixed. But is has been about two years since the Vectron was released so I think there is no fix this time.
On Steam PC, I'm not sure what I'm missing here. "Ballast Googie" With the Vectron. Some of the bogies look a bit blurry, the coil springs don't like coil springs, more like pictures.