Hello.
I am also having the same issue. I'm new to OBS and am streaming Xbox 360 to YouTube as a test for an event that we will be streaming soon.
I get stuttery audio on the stream, but only from my Xbox (via Blackmagic device) not from my voice mic.
Xbox 360, HDMI 720 59.94 fps to Blackmagic UltroStudio Pro USB3 to my Dell XPS laptop to YouTube.
Video:
https://www.youtube.com/watch?v=9nROSFgjsVY (sound issue can be heard from the start and I speak from about 30 secs so you can hear that is fine from my mic)
I have attached my log fine[
https://gist.github.com/c7ca4db1fea71dadd1c5] and have screen grabs of my settings (BM and OBS) if that would be useful to people. [I analysed the log file through OBS and am aware that it says audio bitrate is higher than it needs to be - I did a test yesterday at the recommended bitrate and the audio still stuttered, thus my change today to see if that fixed it)
Can anyone offer any advice?
Many thanks in advance.