When running or previewing an Advanced List, users may see the following error message: Results could not be returned for this list due to the time required to run it. Please review the list and consider adding additional filters to limit results.
This can be due to either not having enough filters to narrow down the results, or by objects being used in the Global filters not marked with an Inner Join.
Steps to Duplicate
One example of when a list may return this error:
Go to Lists > Manage Lists > Manage Basic and Advanced Lists.
Select List Templates.
Select Constituent Information from the Template Category drop-down.
Click View/Copy next to the template Students with Parents (Flattened).
Add the object User Register under Constituent Information.
Select User Base.User ID = User Register.Student User Id.
Un-mark Inner Join
Add a filter for User Register.School Year any of [select School Year]