After having updated to Windows 10 Anniversary Update I am having problems with streaming from for instance Netflix. The sound and picture are no longer synchronous. At the start it is ok but after an hour or so they differ several seconds - very annoying! I use the HDMI output from a NVIDIA GT210 to connect to a TV. If I look at the PC using its speakers it is ok. I have tried to roll back the W10 update and then it is working again.

I'm using Firefox 48. The GT210 has reached EOL in 2014, maybe it is simply to old to work with the anniversary update.