Selection Mode is slooooow!


I’m using selection mode in a 3d designer app I’m working on,
It’s extremely slow I need to be able to individuly select from hundereds of vertices.
Selection mode just doesn’t seem to be good enough.
Are there any “smarter” ways of selecting stuff?
Or can I speed selection mode up someway?

One more point: It works fine and quick if I just pick a single point (even among thousands) the real
problem comes when I drag a selection rectangle - the bigger it is the longer it takes.