Capture w/ virtualdub suddenly doesn't work
 

Hey guys,

I've read hours in this forum and set up my computer to capture old VHS cassettes using a avermedia capture card (pci-e) and virtualdub with UTVideo.
It worked like a charm... until yesterday. I didn'T change anything on my setup or in virtual dub, but now the audio and video aren'T in sync and as soon as I turn on "play back Audio" while capturing, it get's really worse, as if it's too much stress for the CPU - but it isn't at all. only up to 20% CPU is used. And this problem didn't happen before. I have no idea where to search for the reason for that... any ideas?! :unsure: