Galaxy S5 :: Significant Lag At Unlock Between Pressing Home And Screen Turning On

I have a 6 month old Galaxy S5 on Verizon, and in the past month I've had a problem where I will press the home button to turn the screen on and there will be a delay of up to 4 seconds before the screen lights up and I can unlock. Oftentimes, the delay is so long that the phone turns the screen back off from inactivity a split second after it finally comes on.

If I am actively using the phone, and then turn the screen off and right back on, there is no delay. It's only after turning back on after several minutes of inactivity (which is most of the time). It's almost as if the phone has put itself to sleep and is taking a long time to wake.I am on Android 4.4.4. If it matters, I also get the camera-daemon battery suck issue from time to time.