Flycast Atomiswave settings?

Playing Metal Slug 6. Is there any way to get it “full” screen?

I remember years ago playing the other Slug games having to set this in the dip switch settings of MAME. Not even sure Atomiswave has such settings lol


EDIT: I found the Naomi dip switch settings (Didn’t know it worked for Atomis LOL) and no video options.