A week and two updates later. FPS stays at 15 but for some reason now I get a warning that it needs 8gb ram that I didn’t get before and tge loading times are much worse.

The game is playable, being pixel art and old, you don’t really feel the 15 fps and they don’t make it unplayable or anything.

That said, I wouldn’t play this game on a phone anyways even if it run at 60 locked and I fully understand that my s9+ will never be good enough for yuzu. That’s not a criticism of the emulator whatsoever, just reporting how it plays on old exynos phones.