It was pretty simple, go into your settings/ notifications and do not include as many apps as possible. After that, go into settings/ general/ background app refresh and do the same. For background app refresh for example, I only have FB and FB Messenger selected. The iPad 2 seem to be choking on itself due to memory, by disabling the stuff happening in the background, the iPad comes back to life. Don't need to do anything else like reduce animation and such. Give it a shot, I was pleasantly surprised at how much snapper the iPad became. Switching in between apps still is show but that's due to the age of the iPad 2. This is an iPad 2 running iOS 8.4.1.