I use an Elgato GameCapture HD to stream Wii U / Nintendo 64 games. While using this capture card with OBS, you need to set a delay on your microphone and your webcam to 1500ms. I also stream games right from my computer as well, and I was curious if there was a way to have delay settings change when you change your scene selection instead of having to stop my stream, and change the audio delay. Or, if anyone else knows a work around that would be appreciated as well!