FaceTime keeps lagging
Whenever I FaceTime someone the call randomly starts to lag. The frame rate drops significantly and the video is delayed from the sound. Also the screen usually gets very bright when this happens. The person I FaceTime has updated their phone; we've both reset our phones numerous times, and we are out of luck as to what to do. Updating didn't work and resetting the phone only works for a period of time. We desperately want this issue fixed, please help. Thank you.
iPhone 7 Plus, iOS 13