According to protondb.com the entire Final Fantasy catalogue is pretty much flagged as either Gold or Platinum so you shouldn’t have issues.

For what it’s worth, the console versions also run great through EmuDeck and RetroDeck on my Steam Deck too!

I need to get around to playing Clair Obscur - I’ve seen and heard great things about it, but with a 2yo running around the house - I just don’t have the bandwidth currently to invest in new games… 😅