To add to Dave’s comment, we also have a virtually identical machine that is running the same project but using AJA IOHD and there have been zero problems, so we don’t believe it’s only a project issue anymore, but maybe a combo of the Decklink, Software, Driver. We have gone the route of creating new projects, copying sequences in, etc. I do think that it has to do with the project file being bigger (178MB). We’ve always noticed issues in the past of projects that approach 200MB having problems.
If anyone has a remedy to this (other than buying a Kona card) please post your findings.