I upgraded to the iPhone 12 Pro Max and have issues at times with screenshots. Sometimes after taking one it'll freeze up on me. I can't send the image as a text or even click on the screen to delete the image. I am forced to reboot. It's done this quite a few times already since I got it on Friday. I notice some applications that were quick on my XS Max now lag slightly. I have iOS 14.2 installed (non-beta)