I was recording a game play of Fortnite and then I went to my video folder to review it. I notice that i got 3 audio in the recorded video. One is the game audio, two is the microphone audio and the third is a repeated audio of my game audio. Then, I check my Mixer then noticed my Mic/Aux recorded audio that is from my computer (not microphone). But the problem is that in my Sound settings at Recording tab, the microphone doesn't record my computer audio but only streamlabs obs does.
Best answer by Ocgineer
Do you only have set a device (default Windows Playback Device) as Desktop Audio Device 1
and your microphone selected as Mic/Auxiliary Device 1
Settings > Audio and you see the microphone level meter showing activity when you play audio on your computer but not speaking into the microphone? If so, then I would suggest to re-install your motherboard audio drivers and see if that would help!