Try deleting the ShaderCache folder in C:\Users\<User>\Documents\Dolphin Emulator
Also try:
1) Update drivers, Windows updates, DirectX Web updater, and latest version of Visual C++ (some components may be missing)
2) Make sure under Power Management in Windows you're running in High Performance.
3) Use the OpenGL backend on one of the latest dev builds, as it is faster than D3D.
Also try:
1) Update drivers, Windows updates, DirectX Web updater, and latest version of Visual C++ (some components may be missing)
2) Make sure under Power Management in Windows you're running in High Performance.
3) Use the OpenGL backend on one of the latest dev builds, as it is faster than D3D.