Hello ! im comming from stock miui ( global / eea / cn ) ive been tested camera recording at 1080 60 fps and 4k UHD at 60 fps too ... So , i notice when i play the video recorded , sometimes , every 5 seconds or 10 , the video is lossing frame rate ... i mean , it doesnt still smooth at 60 fps ... i changed from h264 to 265 ... i tried to format data , delete cache , install clean rom , all the same ! i tested android 9 miui 10 version 10.3.4.0 and no issues found on camera recording at 60 fps on 1080 and 4k too ... So i think is a bug into the camera of the base of MIUI 11 Android 10 ... Please , someone can report me he has the same issues ? Thanks and sorry if im wrong of thread.