[fandangos]

Ok,  first build is here:

http://mirrors.kodi.tv/test-builds/android/arm64-v8a/

and here:

http://mirrors.kodi.tv/test-builds/android/arm/

If using this build set refresh rate change to always instead of on/off. 

I believe I know why this is happening. This build uses amc-hevc for dolby vision, while using dvh1 with refresh rate switching doesn't produce the same error.

First of all let me say thank you for all the work you are putting into this, together with the other people you mentioned.

What are the differences between those two decoders anyway?

Going to give your test build a go now, thanks again!

I have no idea.
Those are requests made to the Android box.
We will set on the right one by experimenting.

AMC-HEVC is obviously for hevc. Which is the video encoder of 4k content. Dolby Vision is just dynamic metadata on top of it.
Since it worked for me during some testing I opted for it.

AMC-DVHE should be the one to go but for me, it crashes.

AMC-DVH1 is the one that actually works it seems but since dvhe was crashing and amc-hevc seemed to work I haven't tested the dvh1 before.

So, better change it and see what most people report