Well, I am not here to hammer Lightroom6,but my experience was less than encouraging. I am not saying your experience will be as bad as mine. First, I have no performance issues with LR5 on my rather unimpressive Acer Aspire laptop. It does what I need. I am sure a newer more powerful laptop would help a lot. I downloaded the LR6 upgrade from Adobe on a Monday and couldn't wait to try it out. The pano and HDR features were the most tempting new features for me. I would no longer have to create my panos in Microsoft ICE or HDR in photomatix!! Well i loaded some photos to test the Pano and it stitched them fine, the preview screen showed a very good stitch, but when you did the merge function the laptop froze up and would not recover. I had to go to the task manager ( which took forever to open) and end Lightroom. I tried three more times and had the same problem!! So I completely shut down and started over and decided to use the HDR develop tool. Well it was a bit slow to get to the preview and there are no options to do any changes to the HDR image. The image resembles what a good DSLR in camera HDR would do or what you can do in LR5 by using the highlight, shadow, white, and black sliders. Then when you choose to finish by merging the laptop froze again. Takes forever to get the program to end and being a gluten for punishment I tried this two more times with the same results. It did not take me long to decide to remove LR6 and contact Adobe for a refund. Their live chat was easy to use, but as of a week later my refund has not been credited back to my credit card. I hope LR6 works for the rest of you, but I thought it would be interesting if anyone else had the same issues as I did? Maybe future releases will make LR6 work for me.
Geoff