Not sure if this is the best place to ask this but it's audio related. My problem is that audio and video get out of sync whenever I watch something on my PC. This only happens when I have the audio coming through my monitor speakers via HDMI directly into the GPU. I have a pair of USB headphones but they work fine. Once the audio falls behind I can refresh the page and it will fix it for a few minutes but after a few minutes it gets behind by 3-5 seconds . I'm totally stumped in this one
I just had this problem and after three days of googling, windows tinkering and some hair pulling, I finally fixed it. It seemed that the Atheros drivers for my WiFi adapter was the culprit. Even though I use the wired Broadcom connection, it had to be fully deactivated and the drivers uninstalled to stop interfering with my sound. I hope this helps you as well.