Nvidia graphics card:

• Right click the desktop.
• Select "Properties".
• Select the tab "Settings".
• Click on the "Advanced" button.
• Select the tab "G-force" or similar.
• If you can't see the extra menu to the left, click the green button located on the left side.
• Select from the menu the "Performance & quality Settings" option.
• In "Global driver settings" click "Antialiasing settings".
• Deselect the "Application-controlled" check box located in the bottom left corner.
• Optionally set the slider to a higher value.
• Click OK.
• You will need to restart the Screensaver for the setting to have effect.