I used one of my own CFGs and renamed it, like i said in the previous post they both look identical but something is wrong with your file.
You can set screen size to whatever you want if you choose 'custom' under video>scaling>aspect ratio in Retroarch.
@vince16 I couldnt get it to work so i redid the cfg file and now it does, but the cfgs are exactly the same so i don't know what's going on.😁
Try this
SNK_NEO_GEO.cfg
Can someone check their retro achievements score, mine says 0, i don't remember it saying 'softcore' after the number before on the website, i think it's broken it in LB?