Why is my Facebook connection so slow?
Check if your internet connection is slow ….
Your network connection may be the problem. ... Switching to your 5GHz network, if your router supports it. Do a speed test — If your network speed is less than 2 Mbps, you may need to find another connection. You may need to switch to Facebook Mobile or Facebook Lite.
Why is FB not connecting?
Try refreshing your browser or reopening the site; on a mobile app, close and reopen the app. You can also check to see if Facebook is offline and then restart your device, update apps, and clear your cache.