Thank you for the info.
Here is a twist I only have the problem when I add the fast color corrector. There are no black dots on the raw footage. But I just added the filter without changing anything, it should have no effect, but I have black dots, just by loading the effect???
Iʻm using a 8core tower with a Nvidia GeForce GT 120 512MB card. No mercury playback. could this be the problem??
Dan