Preview Enhancement

I am a bit sceptical, but when I do a preview it says preview iris or protheus enhancement but it never mentions the filter of the second enhancement what does this mean ?

The Second enhancement is skipped in the preview if this is the case I have lost an incredible amount of time

If you look at the preview files in the temp directory, their filenames show both enhancements. Maybe losing the second enhancement in the preview display was the tradeoff for displaying the detail recovery percentage, but there certainly seems to be room to show all.