You generally don't need to set up Dolphin for each game. Dolphin will automatically apply compatibility settings for games that need it, so you can just have a general configuration that you use for all games without doing anything extra. You might however want to change graphics details (resolution, antialiasing) based on how fast your computer is able to run a game.
Your profile says that you're running Dolphin 4.0. If you're using 4.0 and not something like like 4.0-6027, I strongly recommend updating to the latest development version. It will improve your performance.
By the way, the image in your post doesn't seem to work.
Your profile says that you're running Dolphin 4.0. If you're using 4.0 and not something like like 4.0-6027, I strongly recommend updating to the latest development version. It will improve your performance.
By the way, the image in your post doesn't seem to work.