I started noticing this issue in the middle of the week. iPhone 6S. I'll click the home button, and where before Touch ID would kick in instantly, but now there is 2-3 seconds of lag. The iPhone thinks I'm trying to activate Siri 3/4ths of the time. Same issue when tapping the sleep/wake button. A full 2-3 seconds of lag when "waking," instant response when going back to sleep. I have tried restoring, a force reset, and am starting to run out of ideas. Any others?