VLC dual view slowly getting async

[LaUs3r]

Hey guys,

I run a 24" displays as primary display (direct connection to the PC via DVI) and a LCD-TV as secondary (via HDMI: PC->A/V-receiver->LCD-TV). Now, usually I want to watch movies on my LCD. So I start VLC and move the vlc window from the primary display to the secondary (LCD) and active fullscreen mode. At the beginning video and audio are sync but after a while sometimes the video hangs/stutters a little and audio slowly starts to get async. Any ideas? GPU acceleration is on (well, at least I turned it on couple of VLC versions before and if the updates didn't change that it should still be activated).

My box is a Intel E8400 core duo, 4GB RAM, GTX480, OCZ Vertex2 SSD, OS Win7 32bit.

Any suggestions?

greetz

[High-Voltage]

My guess: It's the movie? Is it happening with every movie?
Audio and video out of sync is a common issue of a different "path length" (digital signalprocessing takes longer than the analog one), but then you would notice it all the time.
Never seen the "drifting" behaviour you're talking about...

[LaUs3r]

it's not the movie. I experience the problem some while now. But I think I only encounter that problem with hd-stuff (x264).