Not enough testing or user experience analysis has been done when a review is running on a document with lots of issues raised over many previous revisions.

There could be thousands of issues on tens of documents over tens of revisions.

There are serious concerns over the performance of the system in this case.

One potential idea if system sturggles to return so many issues is to align the user eperience to pdf viewer, by offering only open issues first on the interface.

The provide a toggle to view the rest.