These are two actions that will improve the performance of the case list views that are slow to load because of the large number of cases in the system. Filtering the views by case owner will limit the number of records returned by the views and make them load faster. Reducing the number of fields displayed will also reduce the amount of data rendered by the views and improve their speed. Verified References: : https://help.
salesforce.com/s/articleView?id=sf.reports_listviews_bestpractices.htm&type=5 : https://help.salesforce.com/s
/articleView?id=sf.reports_listviews_create.htm&type=5