When running eg hg id -r 'bug(1148652)' it takes 30 seconds or so for the response to come back. It is in my changetracker DB (or whatever it's called); I can open that up with sqlite and get the changeset immediately there. I will attach profile summaries.
I updated my vct repo, to f1e5524cb68e. Same result.
For reasons I don't recall, the "bug()" revset doesn't use the SQLite database for queries. `hg buginfo <bug>` will use the database, however.