UPDATE (2:30 PM Eastern Time 2016-04-06)
Our delivery partner officially gave word that the performance issues have been resolved!
UPDATE (2:15 PM Eastern Time 2016-04-06!)
Things were looking back to normal on load times with Hubs, Flipbooks and Application files as of 2PM Eastern Time from the Uberflip Office in Toronto.
Beginning on 1:14PM Eastern Time on April 6, 2016, some Customers and End-Users connecting from the east coast of North America may be experiencing intermittent slow performance in loading content in front-end Hubs and Flipbooks, as well as the back-end Application.
This issue is occurring to due a problem with our CDN provider (content delivery network) serving to this area and they are working diligently to resolve this problem!
We apologize to anyone who is affected by this and thank you for your patience during this time!
Please contact the Support team if you have any questions.