This is a screenshot of ProStats 1.9.7 settings page:
Since version 1.9.1 there are two unique features in ProStats’ settings page (in Admin control panel).
1. Instant Viewer: A re-sizable floated layer at the top of the page which shows you how your new settings would appear.
2. FloatStats: A small floated box in bottom left-hand corner which uses Ajax to estimate the number of database queries and memory usage before you save your customized settings!
These tow features would help you find the perfect balance between appearance and performance before you save the settings or even refresh a page.
This is a screenshot of ProStats 1.9.7 settings page showing two aforementioned feature:
ProStats 