The action you see on your screen is a series of frames strung together, like a movie. Refresh rate refers to how many times per second the display updates or “refreshes” the image it shows. This is measured in hertz (Hz), which stands for cycles per second. A higher display refresh rate shows more frames per second, making the action smoother and more responsive. This uses more battery power.
You can adjust the display refresh rate, depending on your needs:
To raise or lower the refresh rate: