Have you try other servers on Speedtest.net? I am still having connection issue with two servers. But my speed haven't slow down today. I am able to stream HD video from youtube at 30-80Mbps.
A Tech was schedule to come to my house today, but he didn't show up so I called Verizon. They say the tech didn't come because there is an outage in this area, something to do with the GPON. ETA fix time is today at 7pm.