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If you encounter graphical glitches after a Citra update or a GPU driver update, your cache may be "poisoned."

Instead of freezing the game to wait for a shader to compile, Citra continues running the game and skips rendering the object until the shader is ready.

| Scenario | FPS (example game) | Stuttering | |----------|--------------------|-------------| | No cache (cold start) | 15–30 + drops | Heavy shader compilation stutter | | Cache populated | 30–60 (stable) | None after initial |

While technically possible, it is generally discouraged for a few reasons:

While many users look for "transferable" shader caches online to avoid stuttering entirely, this is often problematic:

Citra’s shader cache is a critical performance feature that eliminates shader compilation stutter. While not perfect (cache invalidation and disk usage are trade-offs), it transforms many games from unplayable to smooth. Users should leave it enabled and only clear it when encountering graphical corruption after updates.

Delete the cache folder while Citra is closed → forces recompilation.

auto shader = CompileFromPICA(hash); saveToDisk(hash, shader); cache[hash] = shader; return shader;

Everything You Need to Know About the Citra Shader Cache Citra is the premier emulator for Nintendo 3DS games on PC and mobile. While it offers incredible performance, many users experience "stuttering" during gameplay. This is almost always related to the shader cache. Understanding how this system works is the key to achieving a smooth, console-like experience. What is a Shader Cache?

Legal Risks: Shaders contain code derived from the game’s original assets, placing them in a legal gray area for sharing.

Check Disk Space: If your drive is full, Citra cannot save new shader files.

The shader cache in Citra, a popular Nintendo 3DS emulator, plays a crucial role in enhancing the gaming experience by optimizing the rendering process. Here's what you need to know: