Galaxy S5 Active texting EXTREMELY slow, how can I fix it?

A

AC Question

Galaxy S5 Active texting EXTREMELY slow

I recently got the galaxy s5 active... about 20 days ago, it was brand new when I got it so it's not previously owned so I don't think there's anything wrong from already being broken in. I haven't had a single problem with it until tonight. When I'm trying to text it's nearly unresponsive. It keeps freezing. If I'm receiving a text at the same time I'm typing it will either freeze completely or type one word a dozen times despite me only typing it once. I'm new to samsung/android so I don't have any clue where to even begin to attempt to fix it.
 

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