CIM application is running on a Teradata or SQL Server database. The application is trying to access information in the database. The application connects to the database via the network or your internal intranet. You will get a timeout error if the application is not responding to the database request in a timely manner. What are your typical response times when using the CIM application UI? Do you typically get sub-second responses?
What you may be experiencing are the following:
If the above does not help log an incident with the GSC they have an extensive list of items that you will need to provide as well as a list of items for you to investigate on your own. Performance issues are typically outside of the CIM application. It’s important that the information requested is provided in a timely manner.