I use Yuzu.

its pretty good, depends on the game of course.

I recently loaded Fire Emblem Engage, super mario oddosy, donkey kong tropical freeze, and both zelda BOTW and TOTK. I was running them on my steam deck so performance was so-so, some games better than others, all of them definitely playable though (except super mario sunshine, but that was one I tried probably almost a year ago, yuzu is better now)

emulation still proves to be the best way to play.

Quite mature. Ryujinx had day-one support for Tears of the Kingdom. Things just keep getting faster.

Yuzu is already really impressive. I have a relatively low-end system (rx570, ryzen 2200g) so I'm not really trying to push graphics, but I've been playing totk comfortably at 20-30 fps (yeah I know my standards are low, but it's perfectly enjoyable). There are a few occasional graphical bugs, but none are game breaking, and the major ones have been fixed. And remember, this game is a recent release. Older stuff is generally going to work a lot better.

Since it's mostly cpu bound, with a more powerful system (and probably a less demanding game) you can probably up the resolution quite a bit. I was even able to turn on fsr without a noticable performance loss.

There's a compatibility list you can check, although it seems down right now.