Anyone’s app running like trash?

Since the last update my Snapchat app is super laggy. Sometimes when i open the app it’s just a black screen, and I had to force close it and reopen it.

Sometimes when I try to edit a video or picture from my camera roll and add music the video will get really choppy, and when I hit save the app freezes. Again I’ll have to close the app and restart. Sometimes it will just keep freezing; is this just me?