I have been troubleshooting this for months, but I haven't found the cause. Every 2-3 weeks, 24p audio and video playback on my HTPC will begin to stutter. The symptoms are dropped frames/choppy video, and audio that stutters and pops during playback in MPC-HC. However, recorded and live HDTV played back from W7MC will not stutter.
Software: W7MC => MediaBrowser => MPC-HC (MadVR + LAV)
Hardware: Shuttle MB, Intel Core2 Quad, nVidia GT430 => HDMI => receiver => HDTV
I tried the following, which have no effect: restart, uninstall/reinstall nVidia drivers (with & without full reset). uninstall/reinstall audio drivers, update/rollback nVidia drivers.
However these steps *do* fix the problem, albeit temporarily (2-3 weeks): shutdown HTPC, remove GT430, cold boot (no graphics card, no change to IGP jumper setting on MB), remote shutdown, add GT430, cold boot (fixed...for now).
Any ideas on what could be going on here? Since I can't invoke the problem, it's been pretty difficult to test.
Thanks for any help!