Safari pauses before loading pages
I'm running Safari 9.0.2 on OS 10.11.2.
Safari's blue loading bar will pause when I click a link or try to load a page. Sometimes, the page will load afterward. Sometimes, the page permanently pauses.
I'll refresh, refresh, refresh. Sometimes I'll reach an error page that the site could not be loaded. Then refreshing one more time will make the page load.
I have already uninstalled extensions and plug-ins. None of them seem to make a difference.
This problem happens on home wi-fi as well as work wi-fi.
Anyone have any thoughts?
MacBook Air (13-inch Mid 2011), OS X Mavericks (10.9)