已经从5兆升级20兆播放还是卡顿。浏览器和模拟器，没问题，
视频地址：https://myhelper.vip/static/uploads/api/image/0/20190705/e60fcfeaacbf584b74330412d7fd5fa3.mp4

//代码
<video
id=“myVideo”
src="{{detail.video.attach_uri}}"
enable-danmu
custom-cache="{{false}}"
danmu-btn
danmu-list="{{danmuList}}"
controls
poster="{{detail.video_cover_pic}}"
></video>