Thanks for the reply @HyperspaceMadness and happy to move the conversation here. Wasn’t sure where was best so I picked up from where it was last mentioned.
This is how it looks in your Dual Screen-DS_MBZ_2_STANDARD_LCD-GRID preset: Looks good to me
This how it looks in Duimon’s Advanced NDS Vertical shader preset: Does not look good to me
No matter what I try to I can’t get Duimon’s preset looking like your LCD preset image (what I was referring to as “clean” - no uneven lines or banding). Same Core, Same Game, Same resolution (native).
Hopefully you can see what I mean from the screenshots. If there is something to be tweaked in the preset to get there I will happily take the instructions and try to get it sorted.
Thanks as always!