I had the same problem. 2 IPads and 2 iPhone 6's. I went to the Apple Store and they suggested I upgrade my IOS to 8.1.2. The previous upgrade was 8.1.1 and caused some problems. 8.1.2 helps rectify those problems. To see if there is an upgrade available, go to Settings, go to General, go to Software Update. If you see that there is an update, back on out. Update your device through iTunes so you don't chew up device space.
Connect your apple device to your mother computer. Open up iTunes. Click on device symbol in upper left hand corner. iTunes should recognize your device and a window prompt should appear that there is an upgrade available for 8.1.2. Follow the instructions form there. It will take some time, but your device should run smoother.
FWIW, I run Chrome and the wife runs Safari on ours.
