You will see an option that goes like ‘General Settings,’ click it open.Set the dolphin configuration right of the dolphin:.Here you will be provided with a dolphin emulator best settings for best performance android so that it will stop your game from lagging making sure that it runs faster. So in order to have it run faster, you have to secure each end from your side to have the right effect If that is the case then it will also cause the game to be played slowly. Maybe it is the graphics: Many times the problem lies in the graphics which influences the whole thing to lag.It is like a good chain that affects the whole. If the dolphin is lagging, so will the game. If your computer has less space then it could cause the game as well as the dolphin to lag. Maybe it is your computer: Many times as it happens the game that you are playing on your computer using the dolphin might require more space.If the configuration setting is not set right then it will not work properly then it might cause the slowing down of the dolphin. Maybe it is your configuration system: Many times as it happens that the configuration system of the present platform that you are using has become very slow that it is causing the dolphin to be slow.