Settings in KODI (Android STB's) for IPTV HD Video Streams

[kens]

In System Settings/ Player/ -Video Tab (*Setting Level to Expert)
- Adjust Display Refresh Rate - Set to "On Start / Stop"
- Enable HQ Scalers for scaling above - Set to " 0% "
- *Try Acceleration - MediaCodec Enabled (not Surface) If it does not help, then Disable and check the Libreelec link below.

If your STB's Android display settings has a 1920x1080 -30 setting ... use it. Otherwise leave on Auto.
(The refresh rate will match the frame rate of the IPTV HD streams (~29.97))

(HD Video Judder Explanation)

https://androidpctv.com/tutorial-judder-in-video-playback-what-is-and-how-to-fix-it-in-android-or-windows/

(Libreelec Kodi for Amlogic based Android STB's)

https://androidpctv.com/tutorial-libreelec-install-guide-tv-box-android/

/kens