Audio gap issue when using 1.5x playback in ATV 4K

Infuse Pro 6 makes audio gap when I use 1.5x playback in ATV 4K. When I set playback speed to 1.5x, first there is no audio gap but it makes bigger audio gap gradually. A temporary fix to this problem is to pause playback, rewind a couple of seconds then play.

1.25x playback: the same problem appeared
1.75x playback: the same problem appeared
2.0x playback: no problem.

Here are three txt files showing Mediainfo of three source video file I’ve played with 1.5x mode.

I really love to use Infuse Pro 6. Hope this problem disappears soon!