Ensure you have at least 20GB of free space (the game is roughly 16GB, plus updates/DLC and shader cache).
Super Smash Bros. Ultimate running smoothly on Yuzu for Android, you'll need a high-end device—ideally one with a Snapdragon 8 Gen 2 or newer—and specific configuration tweaks. While the original Yuzu project is no longer in development, community-maintained versions like
: Enable Asynchronous Shaders to reduce stuttering during combat.