Hi , my team is having the same issues with voice being choppy in 4.12, we would sincerely like a fix sooner than later as the function is very important to our project. Is there any engine code that your team is aware of that could be grafted into 4.12 as a hotfix? I have been browsing your master and promoted branch only to find that the code and commit comments, or the solution itself, is not transparent enough for me to bring over without guidance.
If there is nothing for it, we understand and hope to see it fixed soon.
-Spiris