[Kodi20/21] 在功能较弱的 Android 设备上,带字幕的视频出现卡顿现象。

< !--- Please fill out this template to the best of your ability. You can always edit this issue once you have created it. --> < !--- Read the following link before you create a new problem report: https://kodi.wiki/view/HOW-TO:Submit_a_bug_report -->