Is it normal that when you first click on a timelapse folder, it takes forever to render the preview luminosity, despite having set the number of threads in the advanced settings section to a value much higher? Only a single instance of Adobe DNG converter is called at a time, and it goes through each individual photo one-by-one (see attached screenshots).

https://imgur.com/a/m2LPFJ5

This only applies to the very rare case, that you are loading images without any embedded preview. DNG Converter only needs to be used in those cases and then it will take long.
But for 99% of all Camera Raw files you will have small previews embedded which will be used and this is very fast.

The files you are trying to use might be Cinema DNG files, indeed those don't have any previews embedded.
I'll move this to feature requests.

So what's the fix? Embed a JPEG preview when converting the RAW file to DNG?

This post was last modified: 2020-05-27, 00:06 by Gunther.

Sure, if you did the conversion you should always embed the previews.

But in that case, I'd really recommend that you don't use dng at all for Timelapse. Better use the original raw files. The workflow will be much faster.