Why does my lock screen freeze when receiving a text?

[AC Question]

I have a Verizon Samsung Galaxy S5 and I've tried all the usual procedures to attempt to correct my problem (i.e. restarting phone, factory reset, wiping cache, etc). It does not happen every time. When it does happen, it's usually after receiving an SMS or MMS message while the screen is off. I hear the notification and when I press the home button or the power button to illuminate the screen, it lights up, but it remains totally unresponsive. After waiting 5-10 seconds, it refreshes and becomes functional again. This problem occurs whether I am using a pattern, pin, password, or fingerprint to unlock the phone. Any thoughts? Thank you.