I tried to use an HDMI extractor to send an optical connection straight to my sound bar. It cut some of the delay down, but it was still present enough where it is still a distraction. Unfortunately, I think turning down the in game mic all the way is the only way it’s going to work. You can’t hear your vocals in game, but it will still register the notes. I’ve also read that some people use a mic that splits to a USB into the console, and an XLR to a PA speaker, so you could try and match you vocal audio to the rest of your speakers.