500 = 50 miliseconds. check the picture in your bot folder, if it is the menu instead of your gear keep raising the load time and RESTARTING not PAUSING the bot.
you can make it faster manually, Its set like that because any faster and Chancity's testing shows it gets false detects. The current speed is what he found to work best. false detects usually mean script pauses and gear changes.
if you want to experiment, look in the .au3 file, I don't want to make it a GUI variable because its really not meant to be tampered with.