Very slow loading of facebook that only happens on AT&T U-Verse

I have had a specific internet problem these past few weeks that seems to be narrowed to AT&T U-Verse. Here’s a short background of the situation: Our house has had AT&T DSL for years, and it worked fine. We switched to AT&T U-Verse after receiving a letter regarding it, and the switchover happened on November 4, 2014. For about a month afterwards, the internet service continued as normal and everything seemed to be fine.

However, starting around the week before Christmas, I had extremely slow service with 1 website, facebook. It could take up to 5 minutes for the page to load, and when it did it often loaded incompletely. This happens regardless of what web browser I am using (Chrome, Internet Explorer, Firefox), and regardless of what device I am using (both of my Windows PC’s, my Android tablet, and my Android phone have a hard time loading facebook when they are connected to the AT&T U-Verse network). Only one of my PC’s is connected to the AT&T router by Ethernet cable; the other devices are connected by wireless. However, slow facebook loading has been an issue on all devices, and on all browsers in the network, and is still a problem for me continuing now.

I know this is not an issue with the facebook website or my facebook account itself, because I have been able to load facebook quickly and consistently on internet connections outside of my AT&T U-Verse network (at other people’s houses, on cellphone 4G, at the office, etc.) Also, friends signing into facebook at my house and connected to my AT&T U-Verse network also have very slow loading when signing into their facebook.

Strangely, this issue only seems to affect facebook so far. Other websites work fine in U-Verse as far as I can tell, and download and upload speeds on the U-Verse network seem to be normal for now. The U-Verse router that is installed is the Pace 5031NV.

The facebook slowness occasionally is non-existent. I would say roughly 20% of the time these days, I can load facebook cleanly and quickly without problems on the U-Verse network. However, this rarely lasts, and the next time I try to sign into facebook will take several minutes, with incomplete loading that often can’t load the chat list, multiple pictures not loaded, etc. 80% of the time trying to sign into facebook is like this now.

I don’t know how this problem started. Is there any way I can get this issue fixed? Thanks.