Yeah. This issue exists even on the Nvidia shield TV running Android 9. I have read several users complaining about it. It's actually an issue with the EAC3 format. Netflix app handles it well, which is why it doesn't have the issue. I realized this after fighting for long time with both the parties i.e. Airtel and Amazon. Anyway, Prime Video app is crap on Android TV, it works so bad. It's better to either use casting or fire stick for prime video.