I'm upvoting everybody, i don't even have downvote privledges.
As I said, our goal was to be faster than anything else, i meant for your average development tasks. We spent most of our effort on optimizing query results but if you see something slow just file an issue and we'll look into it.
You have to realize, at the time we wrote it, i think seven years ago now, it was blindingly fast compared to pgadmin3, and Pga4 is still broken on large result sets. Many other tools use odbc or have architectural issues that slow them down.