The Manage > Computers page loads slowly for users that are not Symantec Administrators but have rights to all computers.
Looking at an Altiris Profiler trace, the stored procedure spAC_FilterAndGetResourcesDataWithTrustee is taking longer than expected to run.
Security is being checked for resources that do not need to be evaluated, adding extra loading time to this page.
This issue has been reported to the Symantec Development team. This will be resolved in the Symantec Management Platform 8.5 RU1 release.
Until that time, the attached version can be run to allow users with rights to all computers that are not part of the Symantec Administrators role to load faster.