3. You can set global sharpness settings for all your games at once, or manage per-game tuning through the Program Settings tab of “Manage 3D Settings.
Now that you have enabled NVIDIA Image Scaling in the driver, the next step is to set the render resolution for your game.
4. For each game, go into the in-game settings and select Fullscreen mode*
5. Set the desired render resolution. NVIDIA Image Scaling will automatically upscale the lower render resolution to your display's native resolution and sharpen (e.g. 2880x1620 upscaled to 3840x2160)
6. If you enable the overlay indicator, a “NIS” text label will appear in the upper left corner of the screen. A green text color indicates that NVIDIA Image Scaling is scaling and sharpening the game. If the text is colored blue, then NVIDIA Image Scaling is sharpening but not scaling
*For games that don’t offer Full Screen mode, you can lower the render resolution of your desktop, which will enable NVIDIA Image Scaling. To do so, head to “Change resolution” in the NVIDIA Control Panel.