Apologies for the inconvenience caused!
We are actively working on this issue and will let you know once the fix is available in our upcoming release.
Thanks for your patience and valuable feedback!
An error occurred while saving the commentSteve Matthews commented
Clicking on the comments list (only 4 in this document) is a 10-15 second delay, plus 5 seconds of beach ball and then I see the comments. This is such a slow down in production and very annoying.
Acrobat Pro DC, 2015 iMac, 10.11