This is the fifth night it's done this. During the LNFZ the browsing is fine, a speed test shows usable speed, right now, 2:55am, 10.0 Mbs, but the DL speeds are horrible. With the 10.0 Mbs speed test I'm getting 130 KBs downloads. It's almost like the downloads are throttled.
Pretty much where I was the entire last 4 weeks. Hope they get your speed issues resolved. I'm now FINALLY back to around 5-6 mbps after a month of the speeds you're suffering. Thought the crap speeds would never end.