If you are using Mac and find that your cursor is moving too slowly when you press the Left/Right arrow button, here is how you can adjust the cursor moving speed.
While the configuration option is readily available in the Preferences pane, it is not obvious that it is referring to the cursor speed.
1. Open the Preferences pane and go to the Keyboard section.
2. Under the “Key Repeat” section, move the slider all the way to the right (Fast). You can also move the “Delay Until Repeat” slider all the way to the right (short).