Until yesterday everything was working correctly, and today I started a new project and the preview works really bad. It backjumps a couple frames and I hear sparks (as if the mic was not connected properly).
The raw files are perfect, and if I export the sequence the video looks good, I checked everything about updates (adobe and drivers) and everything is up to date.
I've got a similar problem. I've tried setting my default input to "No Input" in Audio Hardware and had no luck.
The very strange thing is though, the playback is choppy, even at 1/8 res but if I click out of PremPro and leave it playing in the background (but still visible) the playback immediately smooths out perfectly. Any thoughts? I've already tried re-installing PremPro.