When working with large SharePoint sites, checking for unique permissions can be a time-consuming task. This blog post explores methods to optimize PowerShell scripts for fetching property HasUniqueRoleAssignments to determine unique permissions, including using PnP PowerShell and the SharePoint REST API. We compare their performance and highlight the advantages and limitations of each approach. Using PnP PowerShell PnP PowerShell provides an efficient way to interact with SharePoint Online and retrieve list items to check for unique permissions.