QueryViz seems to struggle when dealing with big loads of data as the pagination is done by the browser. It would be nice to let the SPARQL engine handle the pagination in order to reduce the burden currently on the browser.
If this task has been resolved in the meantime: Please update the task status (via Add Action... → Change Status in the dropdown menu).
If this task is not resolved and only if you do not plan to work on this task anymore: Please consider removing yourself as assignee (via Add Action... → Assign / Claim in the dropdown menu): That would allow others to work on this (in theory), as others won't think that someone is already working on this. Thanks! :)
@Elfix: I am resetting the assignee of this task because there has not been progress lately (please correct me if I am wrong!). Resetting the assignee avoids the impression that somebody is already working on this task. It also allows others to potentially work towards fixing this task. Please claim this task again when you plan to work on it (via Add Action... → Assign / Claim in the dropdown menu) - it would be welcome. Thanks for your understanding!