Dual PC Streaming and audio Setup
For the audio setup, you must set the capture card as the playback device on gaming PC so that the audio can be captured in the software on the streaming PC.
To route the gaming PC audio to the GC553G2 connected to the streaming PC, you need to select AVT-GC553G2 as the audio device.
Notes: If you want to play audio simultaneously through both your headset (Gaming PC) and the HDMI output (Streaming PC), please refer to this guide: http://d164vpkda9uyv1.cloudfront.net/web_upload/consumer/support/faq/VoicemeeterPro-EN.pdf
There are two ways to fix the gaming PC without an audio problem because the audio has been transmitted to the streaming one.
The first one, you can connect the HDMI from the HDMI out port on the capture card to your gaming monitor if the monitor has a built-in speaker.
You could see the below example:
The second one, you could follow the below vide:
Next, install a virtual audio software to duplicate the audio on your gaming PC, you can see the below video:
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