Are you sure Windows is set to use your GPU for specific games/apps?
In the link below scroll down the page a bit to the Win10 or Win11 instructions.
https://www.asus.com/support/faq/1044213/
Next, double check your NVIDIA Control Panel app is set to your GPU in a couple sections:
Manage 3D Settings:
OpenGL rendering GPU > important if you have multiple GPU’s (integrated graphics)
The next one is up for debate but worth trying/setting:
Configure Surround, PhysX > your dedicated GPU