BillArchive wrote:We have an issue with the Automatic Dirt Removal plug-in where about 1m 20s into a clip the render speed drops to about 1/6. eg 12fps down to 2 fps. We see this on PC and Mac ( intel ) , with AMD and NVIDIA graphics. Seems OK for a while after some upgrades but then comes back. Can often be seen in play as well.
Have a look and please report. We have suffered this for nearly 2 years and Blackmagic currently say that they can't reproduce it. I have seen others on the forum report suffering the slow down / slow renders with the dirt removal.
No luck re-creating it here in a couple of simple tests.
I set up Automatic Dirt Removal in the Color page, configured to 3-frames "Better", Repair Strength = 1.0.
On a 1080p clip and timeline, playback shows a consistent 23 FPS. A render showed average FPS of 22.42. Clip length was 7:15 and it took 9:42 to render, so much longer than your 1:20 threshold.
On a UHD clip and timeline, playback speed was 10 - 11 FPS and render time was 20:40 for a 7:00 clip - 10.15 FPS average.
Maybe there's some X factor that's triggering the issue for you, beyond simply adding the effect to a clip. Perhaps create a project containing one timeline and one short media file on which you can replicate the problem, then export that as a DRA and upload and link that (Google Drive, Dropbox, etc.) Then it can be tested using the exact settings and media you're experiencing it with.