Viewing a large page with attachments macro causes slow loads and timeouts.

"http-nio-8090-exec-2" #226 daemon prio=5 os_prio=0 cpu=1205421.88ms elapsed=180041.76s tid=0x000000003e65c000 nid=0xb90 runnable  [0x00000000560ce000]
   java.lang.Thread.State: RUNNABLE
	at org.hibernate.type.AbstractStandardBasicType.isEqual(AbstractStandardBasicType.java:198)
	at org.hibernate.type.AbstractStandardBasicType.isSame(AbstractStandardBasicType.java:186)
...
	at com.atlassian.crowd.embedded.hibernate2.GroupingHibernateSearch.doInHibernate(GroupingHibernateSearch.java:61)
...
	at com.atlassian.crowd.directory.AbstractInternalDirectory.searchGroupRelationshipsGroupedByName(AbstractInternalDirectory.java:890)
	at com.atlassian.crowd.directory.DbCachingRemoteDirectory.searchGroupRelationshipsGroupedByName(DbCachingRemoteDirectory.java:1154)
	at com.atlassian.crowd.manager.directory.RemoteDirectorySearcher.searchDirectGroupRelationshipsGroupedByName(RemoteDirectorySearcher.java:97)
	at com.atlassian.crowd.manager.directory.RemoteDirectorySearcher.lambda$nestedGroupsProvider$3(RemoteDirectorySearcher.java:220)
	at com.atlassian.crowd.manager.directory.RemoteDirectorySearcher$$Lambda$1764/0x000000080240a840.getDirectlyRelatedGroups(Unknown Source)
	at com.atlassian.crowd.manager.directory.nestedgroups.NestedGroupsProviderImpl.getDirectlyRelatedGroups(NestedGroupsProviderImpl.java:26)
	at com.atlassian.crowd.manager.directory.nestedgroups.NestedGroupsIterator.fetchRelatedGroups(NestedGroupsIterator.java:40)
	at com.atlassian.crowd.manager.directory.nestedgroups.NestedGroupsIterator.fetchNextIfNeeded(NestedGroupsIterator.java:65)
	at com.atlassian.crowd.manager.directory.nestedgroups.NestedGroupsIterator.hasNext(NestedGroupsIterator.java:50)
	at com.atlassian.crowd.manager.directory.nestedgroups.NestedGroupsIterator.anyMatch(NestedGroupsIterator.java:82)
	at com.atlassian.crowd.manager.directory.RemoteDirectorySearcher.isUserNestedGroupMember(RemoteDirectorySearcher.java:135)
	at com.atlassian.crowd.manager.directory.DirectoryManagerGeneric.isUserNestedGroupMember(DirectoryManagerGeneric.java:807)
	at com.atlassian.crowd.manager.application.ApplicationServiceGeneric$3.fallibleCheckForEntity(ApplicationServiceGeneric.java:1050)
	at com.atlassian.crowd.manager.application.ApplicationServiceGeneric$DirectoryPredicate.apply(ApplicationServiceGeneric.java:1015)
	at com.atlassian.crowd.manager.application.ApplicationServiceGeneric$DirectoryPredicate.apply(ApplicationServiceGeneric.java:1011)
...
	at com.atlassian.crowd.manager.application.ApplicationServiceGeneric.isUserNestedGroupMember(ApplicationServiceGeneric.java:1528)
	at com.atlassian.crowd.embedded.core.CrowdServiceImpl.isUserMemberOfGroup(CrowdServiceImpl.java:230)
...
	at com.atlassian.confluence.security.ContentPermission.isPermitted(ContentPermission.java:150)
	at com.atlassian.confluence.security.ContentPermissionSet.isPermitted(ContentPermissionSet.java:76)
	at com.atlassian.confluence.core.DefaultContentPermissionManager.hasInheritedContentLevelViewPermissions(DefaultContentPermissionManager.java:247)
	at com.atlassian.confluence.core.DefaultContentPermissionManager.hasContentLevelPermission(DefaultContentPermissionManager.java:174)
...
	at com.atlassian.confluence.security.delegate.PagePermissionsDelegate.hasContentLevelViewPermission(PagePermissionsDelegate.java:123)
	at com.atlassian.confluence.security.delegate.PagePermissionsDelegate.canView(PagePermissionsDelegate.java:20)
	at com.atlassian.confluence.security.delegate.PagePermissionsDelegate.canView(PagePermissionsDelegate.java:13)
	at com.atlassian.confluence.security.delegate.TargetToLatestVersionDecorator.canView(TargetToLatestVersionDecorator.java:24)
	at com.atlassian.confluence.security.delegate.SharedAccessInterceptor$$Lambda$3158/0x000000080309f040.test(Unknown Source)
	at com.atlassian.confluence.security.delegate.SharedAccessInterceptor.checkAccess(SharedAccessInterceptor.java:87)
	at com.atlassian.confluence.security.delegate.SharedAccessInterceptor.canView(SharedAccessInterceptor.java:25)
	at com.atlassian.confluence.security.Permission$1.checkAgainst(Permission.java:17)
	at com.atlassian.confluence.security.DefaultPermissionManager.hasPermissionNoExemptions(DefaultPermissionManager.java:100)
	at com.atlassian.confluence.security.delegate.AttachmentPermissionsDelegate.canCreate(AttachmentPermissionsDelegate.java:120)
	at com.atlassian.confluence.security.DefaultPermissionManager.hasCreatePermission(DefaultPermissionManager.java:115)
...