Just to add to Kathy's comment #4. When examining logs for one-hit isbn searches that show the delay, the bib record id is identified immediately, which does point to the problem being with the load of the full record rather than the search query.
Just to add to Kathy's comment #4. When examining logs for one-hit isbn searches that show the delay, the bib record id is identified immediately, which does point to the problem being with the load of the full record rather than the search query.