Control center is being unresponsive please fix!

There are times when I want to swipe up since I have an Iphone 7 plus the control center won’t pop up unless you do a slow swipe it almost acts like it stuck and your thumb or whatever finger you use is trying to pull it up but this needs to be fixed because it used to be I could easily swipe up and there was my control center but now it hard and it’s becoming annoying please fix this apple thanks!