How to increase speed and flow of movement on Dolphin Emulator

Here are a few things you can do, to improve the speed on Dolphin: (Source: Dolphin Wiki Performance Guide)

Config

• General
  • Enable Dual Core checked. Usually enabled by default, improves performance on multi-core systems.
  • Enable Idle Skipping checked. Usually enabled by default.
  • JIT Recompiler (enabled by default) or JITIL experimental recompiler.
• Audio
  • DSP HLE emulation
  • DSP on Dedicated Thread checked. Not recommended, according to the Devs.

Graphics

• General
  • Backend
    • Direct3D9 (Windows only; deprecated as of Dolphin 4.0)
    • OpenGL (as of Dolphin 4.0; "fastest Dolphin video backend on NVIDIA cards", see: OpenGL video backend rewrite)
  • Display
    • V-Sync unchecked
• Enhancements
  • Internal Resolution 1x Native
  • Anti-Aliasing None
  • Anisotropic Filtering 1x
  • Per-Pixel Lighting unchecked
• Hacks
  • Skip EFB Access from CPU unchecked
  • Ignore Format Changes checked
  • EFB Copies Texture
  • Texture Cache Fast
  • External Frame Buffer -> Disable checked
  • OpenMP Texture Decoder checked

The bold options may greatly improve performance. Keep in mind, though, that some games require some options to be enabled/disabled, even if this would reduce performance. For example: Skip EFB Access from CPU is an option that greatly reduces emulation speed, but is needed for Super Mario Galaxy.

If messing around with these options do not help achieving a fast enough speed, you may always try this:

Emulation -> Frame Skipping increase the value

This improves the emulation speed, but also results in laggy animations (as a result of skipping frames). The higher the value, the faster the emulation and the laggier the animations will be.
Setting it to 1 or 2 is usually good enough.

If all else fail: Get a faster CPU.
According to the Devs, Dolphin does not benefit from more than 2 cores. Also: More GHz == better (Intel and AMD CPUs do not perform the same at the same clock speed, though, so you might want to keep that in mind before purchase).