You can change the Backup Speed via the Online Backup Settings window.
1. Click on the Online Backup icon in the system tray of your computer.
2. Select the Settings button in the Status window.
3. Select Options and then the Performance tab.
4. Move the slider bar in the Backup Speed section towards Faster Computer which will slow down backup and speed up the computer.
5. Click Save. It may take it a minute to take effect.