[wrxtasy]

In the first post of this thread amlogic devices are advice for good deinterlacing, but using kodi jarvis. So i would understand if it's a kodi leia issue or a chipset issue...

Android AMLogic and Deinterlacing works properly with old Android devices that can use AMLcodec HW video decoding that was still supported in Android Kodi Jarvis.
Android AMLcodec seems to have been removed from the newer generation of 2018 / 2019 Android devices Firmware that use the S905X2,X3, S922 etc chipsets.

However run Linux Kodi on them in the form of CoreELEC Kodi Leia and everything works, deinterlacing included.

So... It seems there is no android kodi that deinterlacing without issue, is it so?

Android Kodi deinterlacing works if you use a Nvidia Shield.