"Search
Reference searches are now optimized in the new search engine"
They are significantly slower "by resource" (New on LHS)


The time improve significantly when repeated, but this had not been necessary with non-reference searches; ("New" is always run first).
Results "by Rank" are also slower (3.8s v. 2.7s for above LN query), considering the restricted presentation of results. This didn't vary for the next set of results (after selecting "Next").
EDIT: just realised this is on Beta 1. Will update for Beta 2!