I would probably first check the Nvidia control panel "Manage 3D settings" options and check the Global Settings tab for "Multi-display/mixed-GPU acceleration" and ensure it is set to "Multiple display performance mode". Also above that, make sure the Maximum pre-rendered frames option is set to use the 3D application settings.
If you have not already done so, I would also recommend checking if you have a graphics driver update that can be installed.
If you have not already done so, I would also recommend checking if you have a graphics driver update that can be installed.
