I skimmed a bit too much, I see. I was hoping to help someone from the frustration I've had. Win10 is great -except when it isn't. In the case of my onboard Realtek NIC and audio... well, a...

Roll back your Realtek nic driver to the Win10 upgrade version, then in your audio properties, disable enhancements. I messed with this for months, was the only way I found that works consistantly.