Every time a Switch game tries to draw a new visual effect—the first time you cast a fireball, open a menu, or enter a new forest—Ryujinx must:
The is a critical performance feature in Ryujinx that stores compiled graphics programs to ensure smooth, stutter-free gameplay . What is a Shader Cache? Shader Cache Ryujinx
NVIDIA users can enable "Assembly Shaders" to reduce stuttering further, though this is an experimental feature. Every time a Switch game tries to draw