Ran into problem with upgrade to lollipop that haven't seen even though it is supposed to be a known issue. If you are connecting through a wireless connection that has IPV6 enabled and are using Google services (like Facebook or Chrome), your Android device will barely work. Trust me - it happened to me and it felt like dial up on a 100 Mbps connection. Workaround is to set up a Guest network on your system with the IPV6 disabled, possibly one each for 5k and 2.4k devices and connect lollipop devices to the Guest network until Google has a patch. Crack open the old manual or contact the vendor as the setup is going to be product specific. I found this out after a week and a half of getting the runaround from Samsung trying to convince me that there was nothing wrong with the upgrade, so I must have screwed up the upgrade. And then I got it from my wireless vendor and Samsung acted like they had never heard of such a thing. NICE.
