video player issue only in roku-express

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I am using different roku devices for my app and I am facing following 2 issues only on roku-express.

  1. When video is played in application and I watched 3 layer in each video.
    Attached images shows 3 layers in video.
    This only happens when I use roku-express device.

    [upload|/TLf6hojFShUhMyzLQ5oAw==]

If I replace roku-express device with roku2 or any other more powerful roku then there is no any above issue.
First I thought that roku-express has less memory than other devices and these issue are because of low memory.
But when I checked and found that roku-express has more memory than roku2.

I am unable to find exact issue in roku-express. What can be issue?