Just something minor I have noticed. I have both S905x2 and S905x3 boxes running CoreELEC. This is just an observation and my guess is that it may have been a bug with S905x2 that was fixed in S905x3 amlogic kernel??
After each power off/on, I notice that the very first subtitle line only will “stutter” or “jump” slightly on the S905x2 box. However, this does not happen on the S905x3 box - subtitle playback is perfect 100%. Both boxes are set up identically and use the same skin, same settings, same video files etc.
Once the first subtitle has been displayed with the stutter, every subtitle afterwards is fine - even for different video files. This will not happen again until the box is powered off/on.
I thought it may have something to do with dirty regions “algorithmdirtyregions” value, but setting this on or off made no difference for the S905x2 box.