Not as good as the first miniseries, but it was fine. The trouble is that they combined the second and third books, and while the third book is a better story, you need the background from the second in order for it to make sense, so they had to squish it all together. It mostly worked okay.
This movie covers Books 2 and 3 from the Dune series of books by Frank Herbert. This is also a follow up to the Dune Miniseries from 2001 on Sci fi, and definitely fixes some of the issues that were present in the first miniseries. Some of the acting is a bit overacting, and some story points from the book are glossed over, but as the only version of Dune books 2 and 3 which make up the masterpiece that is the Dune saga I am a huge fan of this miniseries, and I was surprised in the high quality of this miniseries.