I have found that the new Lightroom Classic Enhanced Details function, via my Win 10 Pro v1809 64bit, Intel Core i7-4790 @3.60Ghz, 12 GB RAM PC, took 2 minutes 45 seconds for LR to create the Enhanced version of a raw photo taken with a Fuji GFX 50R and GF 45mm lens at f5.6. The photo has a significant amount of moire in distant fences and foliage. The Enhanced version has significantly reduced moire with much of it eliminated entirely.
For images with significant moire the Enhanced Details function will be of significant benefit to me because the alternative, using the moire brush to eliminate pervasive moire in an image, is very tedious and will often result in making that raw image very slow to load and to work on.
Here are some screen shot comparisons with the raw on the left and the enhanced version (DNG) on the right of each comparison screen shot. The view is 4:1 in LR to make seeing the differences easier.
Dan