Device: Set up the graphics card to use. If the system has only one video card, select Default.
Delay: Video delay in milliseconds ,the default is 0 ms.
Device: Set up internal audio device, pay attention not to use default audio device, preferably unused audio device. If there is no free audio device, it is recommended to install virtual sound card software.
Gain: Set the audio gain value, if the output audio sound is too small, increase this value.