Best GameBoy Advance (Through RetroArch) config !

[Andorin]

Hi folks !

Im a huge fan of handheld nintendo systems (Game Boy and GBC) and I have to admit that I don't understand a thing about layers in Retroarch...
On my TV, the layout is HUGE and handhelded, its better but still quite zoomy.

How do you play GBA games on your switch with Retroarch ?
Some favourite layers ?

Thanks !