Please confirm the generated version is being generated to a local drive and viewed from there?
You said earlier that one search takes from 9 to 25 seconds. Is that "one" in the sense of a specific search or just any single search?
Because this is an unusual issue, there's nothing to draw on for ideas.
Have you checked meticulously that all the child projects have been generated?
Have they all been generated since the parent was last updated?
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