Enable Page Pre-loading
Page Pre-loading helps to speed up page loading by allowing the store to begin loading the pages as the visitor begins to click on the link of the page they are about to visit. In other words, as the visitor is about to click through to one of your store's categories (for example) - as they hover the mouse pointer over said category's link - the store will begin the initial loading process in the background. The result is that the subsequent page appears to load almost instantly for the visitor.
Log into your Shift4Shop Online Store Manager.
Using the left navigation menu, go to Settings > General > Store Settings.
Once you get to the Settings page, click on the General tab located at the top.
In the Performance section, mark the checkbox labeled "Enable Page Pre-loading."
Click Save at the top right of the page.
Once complete, your store will begin pre-loading pages as the visitor's mouse pointer hovers over the respective links.