Is anyone else having major issues with S/PDIF passthrough for AC-3, DTS, or other digital audio in Windows 8? I can't seem to get any computer working correctly with passthrough. Using passthrough results in extremely choppy playback or artifacts on screen. Tried MPC HC (internal and directshow (ffdshow,ac3filter)) and VLC. PC should have more than enough power to playback the files and passthrough works correctly in Windows XP, Vista and 7.