Instructions
Close all of the applications you have open on your iPod Touch. Pressing the "Home" button at the bottom of the iPod does not close the application, it merely hides it in the background. This means that when you open the GBA emulator it will run slow because there are numerous applications open. Turn off your iPod and turn it back on. This will close all other applications so that when you open the GBA emulator it will be the only program open.
Delete any videos or Internet history you have on your iPod. This will take up memory causing the GBA emulator to run slow. Freeing up memory on your Touch allows the application to run much faster.
Close any Internet pages you may have open in Safari. Web pages take up a large amount of memory. Having any web pages open will cause the application to run slow. Select the "Safari Application" and click on the "Windows" button in the bottom right corner of the screen. Press the "X" in the top right corner of the web page to close the browser window. Repeat this until all the windows are closed.
Delete any applications from your Touch that you no longer use. This will free up a large amount of memory and let the GBA emulator run faster.