Hi Devila,
I am Dave, an Independent Advisor, I will help you with this.
Some PC's and laptops allow you to turn off the Integrated Intel UHD graphics option in BIOS, so that only the Nvidia graphics are used, check if you have that option in BIOS.
Nvidia no longer provide the Optimus function that allows you to disable the Intel UHD graphics form the Nvidia Control Panel, here are two more options.
1
Open the Settings App, then go to System - Display
Click 'Graphics Settings at the bottom of that page.
There, you can add apps and set them to only run on the Nvidia graphics card.
2
Create a Desktop icon for an App
Right click that Desktop icon and on the resulting menu, you can set the Graphics Processor to use for that app.