4K streaming services like Netflix, Amazon.com and Ultraflix all rely on high-speed broadband connectivity of at least, at least, 20Mbps to deliver their goods to your nice and shiny new 4K TV. If your domestic connection can’t manage this kind of connectivity, 4K streaming from Netflix either just won’t work right (will become choppy and halted) or, if you’re connection is slow enough, the content in question won’t be available at all. I like this part of the article. ultraflix baby.