Acer P1223 - Manual (Page 5)

5
English
2 Right-click anywhere on the desktop and select NVIDIA Control Panel. This
will open the setup Wizard if you haven’t previously set up the 3D
environment.
3 Follow the onscreen instructions to set up the 3D environment.
4 Check the Enable Stereoscopic 3D option and select the correct display
type.
5 In the Select a task... list, select Change Resolution. Make sure the refresh
rate of the display has been set to 120Hz (from the appropriate drop-down
menu).