Within the RSS Design tab, in the Animation area, you can also set the Speed and Pause of your feed. If you would like to increase or decrease the speed of your ticker then you can adjust the available Speed slider; which operates on a 1 to 10 setting. If you would like to have a slow ticker, then you would set your speeds to be around 1 to 4; whereas if you would like a faster ticker you would set this to be between 6 to 10 setting.
Using a similar method you can also determine the length of pause that your news items will stay on the screen with the Pause slider. This operates on a 1 to 5 setting; the greater the setting the longer the pause.