In UK I'm seeing 4K streams down to 7.5mbit/sec, which is watchable. Non-4K streams are now streaming at either 0.98mbit/sec or now 0.37mbit/sec which looks absolutely terrible.
Using fast.com shows full gigabit connectivty to them and other sites are fine. The EU suggested a small bitrate drop, but this is down to less than 5% of a standard 1080p stream.