[Brian]

Switching between views involves a fair amount of on-the-fly computation of what's visible or not - that's generally what causes a pause like that.

If you bounce back and forth between various views frequently, one thing that may be helpful would be to open up multiple windows on your database. You can then use Command-` to cycle between the windows, which has much less overhead involved than actually switching the window back and forth between those views.

(I just noticed that myfre also opened a thread on a similar subject; merging 'em to keep information centralized.)