Using too many squeezefunnels shortcodes on a single page can cause a hit to page loading times. Why? Each squeezefunnels shortcode opens the CSS and JavaScript files of the page that it's pulling content from and queries the database for the content. Multiply that times the number of shortcodes on your page.
How many shortcodes are too many? That depends on factors such as what else has to be loaded and how important it is to you to shave off every millisecond of page loading time that you can. As a ballpark, a few shortcodes are ok; a couple dozen are probably going to cause problems.
Use global rows or modules instead of shortcodes when you can. Global rows and modules become part of the main layout, so you don’t need separate queries for the data and separate assets to render them.