How To Enable QuartzGL and Disable BeamSync

This guide will help you enable/disable QuartzGL and BeamSync on Leopard!
Enable QuartzGL
Open Terminal

sudo defaults write /Library/Preferences/com.apple.windowserver QuartzGLEnabled -boolean YES

Change YES to NO to disable it.
Restart or Log Out to take effect.
Disable BeamSync
Open Terminal

sudo defaults write /Library/Preferences/com.apple.windowserver Compositor -dict deferredUpdates 0

Change 0 to 1 to enable it
You can also edit the file /Library/Preferences/com.apple.windowserver.plist using PlistEdit Pro or Property [...]

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