I have all the delays set to 1500 and my audio syncs perfectly. I have no problem streaming at my bitrate (3000) and there is no lag in my stream. I start up the stream and everything is perfect for a couple hours. But after streaming for a few hours an audio delay (in game sound) starts to build (shots are behind visual display etc). Another hour or two and visual lag will appear. I use an Elgato Game Capture, OBS, and I can refer any other info required to help solve my problem. The problem will disappear if I restart the stream. (Restarting is an issue because I will lose viewers, and it should work properly anyway.)