So, I have literally never used a 3ds emulator before, ever.

EmuDeck set up Azahar in a few minutes, a few minutes more for me to find an OoT rom, a few minutes more to dl it...

...a few minutes more to figure out that the EmuDeck parser thing either isn't working at finding 3ds files ... or I am a moron and you just install the .cia (what a file extension name) into the Emu, in Desktop mode.

Add the Azahar emulator itself into steam library via EmuDeck which launches Steam Rom Manager...

Back out into game mode, launch Azahar, launch OoT, and yep, it works, also wow I forgot the 3ds has two screens, Azahar's default render screen sectioning for this is weird, but it works!

Turn on performance overlay, looks like I'm getting a solid 60 fps, rendering the main game screen at double the DS's native resolution.

Start a new save file, go through the intro sequence, run around in my treehouse room a bit...

All works, save for a few instances of the audio playing... a bit too fast, or too slow, for maybe a split second, in a few parts of the Navi flying really fast intro sequence.

... So... seems to work just fine, basically?

Probably I could tinker with Azahar's settings a bit to see if I can iron out the mild audio quirks, but I'd say thats pretty good for a total elapsed time of about 30 minutes, and me having literally zero experience with 3ds emus, much less on a Deck.

EmuDeck handled making up the control scheme layout in Game Mode, which worked fine in game, automatically, I just had to deal with some mild awkwardness of double clicking on OoT with the trackpad to launch it.