i am extremely concerned about speed and so far FARR is just the best, search is fast 95% of the time...
maybe you should carefully review all the search folders of yours, and check there are no remote folders
if i want to search a remote folder, i add it in the search folders BUT i add a keyword, so that it is not used when i perform a "regular" search
then to search on the remote folder, just create an dosearch alias:
dosearch nameoftheremotefolder