The larger your data set, the longer the results will take to load and populate. To reduce the load times we suggest that you limit your data sets when possible. For instance, if you want to review each player in your database by going to View Stats > $/T > Results > Player Summary this will take a very long time for large databases (and even longer with large databases on less powerful computers). But if you needed to just review each player in your database at a certain stake, or on a certain site, you could run a global filter first to reduce the data set and improve the load time.
If you notice a specific report is taking a very long time to load, consider reducing the data set by using a filter. Also only load large datasets when it's absolutely necessary to do so.