Our Client Services team has tried to view completed tasks, from a few months back for example, the issue(as I have been told) is due to the large number instances that have been completed the "Load All" button that exist within the Inbox page does not load the instances. What pretty much happens is as the system attempts to load all these instances it causes a massive increase in memory usage on our server, thus slowing the performance down to what is essentially a crawl. Our support through the VAR suggested creating a report but I fear due to the number of processes the report will include I will be back at square 1 with this issue.
Any help is greatly appreciated as I have a past due internal support ticket pending this.