PlayStation Liveries: Graduated Shapes Don't Work Well In The Game World

After hours in the livery editor getting some light weathering onto a class 40, it looked perfect (to me!). The dirt layers faded to the loco body colour just right.
When I took the livery into the game, the same graduated shapes produced an awful lined effect which just destroys everything.

What's different between the livery editor and the game world to make this happen? Does anyone know a way around it?
I thought it was just a lighting issue, but the same can be seen in the shade.
Examples attached.

 

Yeah, this really ruins some livery’s. I’d appreciate this getting fixed.

 

Yeah, happens on my liveries as well, but not as severe an issue as the pixelation on PS. https://forums.dovetailgames.com/threads/creator’s-club-liveries-glitch-a-bit.52322/