[Q] SMS typing lag since Lollipop Update topic

Ever since I updated my HTC One M7 to android 5.0.2, my text messaging function has been super slow especially when messages are coming in....there is a lag when I'm typing, like it freezes up and each letter I type takes a few seconds before they show up. Instead of being able to respond to a message in 3 seconds, it would take 30 seconds or even longer to be able to type my response and send it. I uninstalled Swiftkey and I am still experiencing the same problem. It only slows down when I'm exchanging messages with someone. But if no messages are coming in, it seems to work just fine. I looked everywhere and it seems like I am the only one having this problem.