First I want to say that the new Variant Selector in 3.0 really makes it much easier to optimize the filter settings. It is a nice design and you can make these fast switches between variants (with the arrow keys) as I wished in an earlier mail. Together with your 2.5 times speed improvement it really makes a change. Thanks!
Often you need to go back and make some smaller changes in earlier photos. It would be nice if you also saved the variants when you save the Filter Preset. It would make it much easier to continue where you were when you made the save.
With Best Regards,
Peter