AIR camera displaying does not smooth on galaxy s9 phone.

hello.

i'm meet problem AIR camera displaying does not smooth on galaxy s9 phone.

sometimes camera frame loss on phone screen. does anybody have issue like me?

the phone models

     - galaxy s9,( android version 8.0.0) 

     - galaxy note s9 (android version 8.1.0)

i'm using AIR SDK 31, -swf-version=42

under lines my as3 code , it well operate on other devices (iphone 8, ipad 9.7), (galaxy tab s3, A6), (galaxy phone s5, s7)

var video:Video = new Video();

var cam:Camera = Camera.getCamera("1");

cam.setMode( 1280, 720, 25);

cam.setKeyFrameInterval(48);

cam.setQuality( 0, 80);

cam.setLoopback(false);

video.width  = 1280;

video.height = 720;

video.attachCamera(cam);

addChild(video);