This is Shader Compilation stutter . Running at 60fps forces the emulator to compile shaders twice as fast. Play through the level once (or use Asynchronous Shader Compilation in Citra settings) to cache the shaders. The stutter will disappear after 5-10 minutes of play.
Taro looked up, his eyes bloodshot from hours of coding. "I won't give up, Yoshi! I know it's possible. We just need to optimize this one pesky section of code..." super mario 3d land 60fps code
Super Mario 3D Land is a platform game developed and published by Nintendo for the Nintendo 3DS, released in 2011. The game was originally designed to run at 30 frames per second (FPS) to maintain stability and preserve battery life on the 3DS hardware. This is Shader Compilation stutter