Can you run Latency Mon on Win 10, with Realtek and not the Windows installed HD Audio driver. Do not have any browser or any other program running. See what it tells you.

This is a "stock" statement. Don't put much in that. It comes up anytime it detects problems, regardless of what it is. I'm pushed for time right now. I'll try to analyze it later and get back. ...

A tool that MAY help is the free Resplendence Latency Mon program. It has helped many with audio problems.

http://www.resplendence.com/latencymon