SSPR PeopleSearch is slow to search for "givenname surname"

Searching in People Search for  “givenname surname” is much slower than searching for “givenname” or for “surname.”

Searching for "John Doe” takes about 20 seconds, but searching for "John" or  "Doe"  takes less than a second.

Make sure eDir substring indexes are created for both givenname and surname.  There should be substring indexes for each searchable attribute plus a value index for 'objectClass' on each eDir server reachable by SSPR.