I just set up new Xfinity service and while the setup process went smoothly, every single page load took 30+ seconds. Any account access takes 30+ seconds per page, everything is S-L-O-W.

IT systems are acquired, integrated and munged together. Most back office workflows are hacked together, and often speed is sacrificed for safety.

Software performance is one of those qualities where if no one is held responsible, it inevitably degrades until the entire customer base is suffering.