How does the NVIDIA Optimus dual graphics card switch

Right-click on desktop-Select Nvidia Control Panel-manage 3D settings

The default option is automatically selected, based on the running program, the driver automatically determines whether to run a stand-alone video card or an integrated video card.

Manual switching using a standalone video card: Preferred graphics processor-high performance Nvidia processor

Manual switching using integrated graphics: Preferred graphics processor-integrated graphics

If you want to set the individual program settings on the Program Settings tab, select

Select the program you want to customize: Select a specific individual program (shortcut)

Preferred graphics processor for this program: Select individual programs to use stand-alone graphics or integrated graphics