It seems to... as you are streaming through OBS Live Stream and directing it to Facebook Live, causing some mismatch with the audio frequency.. you can try following below steps.
1. Go to your group page where you plan to do your live stream. 2. Scroll down until you see Group Settings on the left panel > click Privacy > select your preferred privacy setting (Public or Private) > hit Save.
Also,
If you are on mobile
- Go live when you have a strong connection and use Wi-Fi instead of your phone's mobile data whenever possible.
- Check your battery before starting your broadcast and ensure that you have enough power to last the duration of your planned broadcast.
- Block incoming phone calls for the duration of your broadcast.
If you are using a laptop or desktop computer
- If you have concerns about your Internet quality, ensure that your stream isn't configured to end in the case of an interruption. In Live Producer, under Settings, make sure that "End live video if stream stops" is not ticked.
- Use a dedicated wired Internet connection instead of Wi-Fi whenever possible.
- If you must use Wi-Fi, make sure that it's secured and dedicated for the broadcast. This means a Wi-Fi network that other colleagues, event attendees or family members cannot use at the same time as the broadcast.
Please do revert back.. if you are continuing facing this issue. You can also check
how to set up facebook live with obs if you are still couldn't have the smooth live stream.